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Operator
Greetings, and welcome to the Proto Labs second-quarter 2015 earnings call.
(Operator Instructions)
It is now my pleasure to introduce your host, Mr. Bill Dietrick. Thank you, Mr. Dietrick, you may begin.
- VP of Marketing
Thank you, operator, and good morning, everyone. This morning, before the market opened, Proto Labs issued a press release announcing its second-quarter financial results for the quarter ended June 30, 2015. The release is available on the company's website at protolabs.com. Before we get started, during the course of this conference call, the Company will provide financial projections and make other statements about its business that are forward-looking, and subject to many risks and uncertainties that could cause actual results to differ materially from expectations.
A detailed discussion of the risks and uncertainties that affect the business is contained in the Company's annual report, filed on Form 10-K and other SEC filings, particularly under the heading, risk factors. Copies of these filings are available online from the SEC, or on the Proto Labs website. The Company's projections and other forward-looking statements are based on factors that are subject to change, and therefore, these statements speak only as of the date they are given. The Company does not undertake to update any projection or forward-looking statement.
In addition, to supplement the GAAP numbers, we have provided revenue growth on a constant currency basis, and non-GAAP adjusted net income and basic and diluted net income per share information, that excludes the after-tax costs of stock compensation, amortization of intangibles, and the non-cash unrealized foreign currency activity. We believe that these non-GAAP metrics provide meaningful supplemental information, are indicative of our core operating results, and are helpful in assessing our historical and future performance. A table reconciling the GAAP information to the non-GAAP information is include in our financial release.
Now, I'd like to turn the call over to Vicki Holt, President and Chief Executive Officer of Proto Labs. Vicki?
- President and CEO
Thanks, Bill. Good morning, everyone. Thank you for joining us on our second-quarter conference call. With me today is John Way, our Chief Financial Officer. Also joining us is John Tumelty, Vice President, General Manager of our business in Europe. John has been with Proto Labs since 2005, when we first launched Proto Labs in Europe, and has been the leader of that region since that time.
I will begin today with an overview of the second-quarter financial performance, and some operational highlights. I've asked John Tumelty to provide an update on our results in Europe, and what we see ahead for the region. Then, I will focus on some highlights of progress on our strategic priorities during the quarter. John Way will conclude our formal remarks, with a more detailed look at our second-quarter financial results and our outlook for the third quarter of 2015. Following that, we will be happy to take your questions.
Proto Labs generated $64 million in revenue in the second quarter, setting another quarterly record for the Company. This was an increase of 21% over the second quarter of 2014. On a constant currency basis, adjusting for the $2.2 million negative revenue impact of foreign currency in the quarter, revenue grew 25%. Our results this quarter reflected excellent execution by our employees. Our Fineline Additive Manufacturing business generated strong growth in the quarter, with revenue of $5.4 million, an 86% increase over its revenue in the prior year's second quarter.
The strength in additive manufacturing is a reflection of the focus we have placed on expanding customer awareness of this offering, as well as the benefits of cross selling. Additive manufacturing revenue now represents 8.5% of our total revenue in the quarter. We anticipate continued traction withed additive manufacturing, as it becomes increasingly recognized as a core capability of our Company. To accommodate our expected growth in this service, we recently announced the purchase of a 77,000 square foot facility in Raleigh, North Carolina, which will house our expanded additive manufacturing plant.
We expect to consolidate our two leased facilities, which total 21,000 square feet of manufacturing space, into the new building in early 2016. The additional floor space will give us ample room to continue to expand capacity for this growing service offering. Firstcut CNC Machining service also delivered record sales in the quarter, with year-over-year growth of 28% as reported, and 32% in constant currency. Our Firstcut CNC Machining business benefited from the launch of lathe turn parts, and expansion of our capabilities in machining hard metal. Our Protomold business delivered record revenues, and grew 10% as reported, and 15% in constant currency.
Protomold's year-over-year growth rate was influenced by sales and marketing resources, focused on advertising and cross selling our new additive manufacturing service. Looking at revenue by region, sales in North America increased 23% year over year, led by strong additive manufacturing and CNC machining growth. Revenue growth in Europe was a strong 33.5% on a constant currency basis, as compared to 12% in US dollars, due to the relative strength of the dollar, compared to the euro and the British pound.
John Tumelty will provide more detail about Europe in a moment. We also continued our strong momentum in Japan, with revenue up 33% on a constant currency basis, 12% in dollars. This performance was the result of solid execution, driven by new sales leadership in Japan. We also achieved record net income in the second quarter of $11.7 million, or $0.44 per diluted share. Excluding the after-tax cost, stock compensation, amortization of intangibles, and the non-cash unrealized loss related to foreign currency translation, non-GAAP net income was $13 million, or $0.50 per diluted share. This compares with non-GAAP EPS of $0.46 per fully-diluted share in the second quarter of 2014.
I would now like to turn the call other to John Tumelty, for additional insight into our performance in Europe. John?
- VP and General Manager of Europe
Thank you, Vicki. It is an honor to participate on the Proto Labs' call today. We are proud of our second-quarter performance in Europe, which was the result of a focused energy to enhance our marketing efforts and drive sales. As Vicki mentioned, revenue in Europe grew 33.5%, on a constant currency basis, from the second quarter of 2014. Our revenue strength in the quarter was driven by the actions initiated in Q4, 2014, and continued, throughout this year, to strengthen our leadership in marketing and sales, and augment our sales staff.
We have added 21 marketing, sales and support staff since the end of Q3, 2014, for a total of 66 customer-facing professionals in Europe. Our enhanced and regionally focused marketing team has made progress in improving our messaging to European customers. The appointment of Jackie Schneider to the new position of Vice President, Global Sales has provided the platform to enable our regional European sales leaders to begin the process of leveraging the best practices developed within North America. As we continue to recruit, train and develop our sales teams across Europe, we anticipate further improved productivity and continued progress over the next several quarters, despite the general economic environment within Europe.
In addition to the enhancements to the customer-facing team, we have several more catalysts that will contribute to continued revenue growth in Europe throughout 2015. We launched lathe turn parts in Europe in the second quarter, and are currently in the process of expanding the range of materials to include steel, and align our capabilities with the US service. We completed our soft launch of additive manufacturing in June. I am incredibly proud of our team in accomplishing this significant milestone.
We completed development of the software to enable multiple currencies and languages, built out space to accommodate machines and processes, installed and commissioned the equipment, recruited and trained the initial manufacturing staff, and trained our customer-facing teams in four different countries. Six minutes after the service went live on our European website, we quoted our first customer (inaudible). We have already fulfilled a small number of customer orders, and the reception to our quality has been excellent. I am looking forward to the full launch of this service in Europe at the end of the quarter.
Additionally, demand for liquid-silicone rubber, which was launched last year, remains strong. We believe these new products and services, along with our strength in processes and solid execution, will help us achieve continued growth in Europe. I'll now turn the call back to Vicki.
- President and CEO
Thanks, John. Now, I would like to touch on some of the highlights of progress we made during the quarter, on our business priorities that we established at the beginning of 2015. Our first priority is to enhance our sales and marketing efforts, to address the specific needs of our customers. The new marketing automation software and CRM tools that we put in place in Q1 have begun to deliver results, and are helping us to bring more targeted marketing campaigns to high value prospects in key industry verticals.
During the second quarter, we reached an agreement with Autodesk to offer access to Proto Labs' online quoting system directly from Autodesk's Fusion 360 CAD software. The updated Fusion 360 application, scheduled for release later this month, will have a link to our site that will allow product designers and engineers to easily obtain manufacturability analysis, and receive quotes for our injection molding and CNC machining services. One measure of our success in building brand awareness, in addition to revenue growth, is the increase in product developers and engineers. We served 11,822 developers and engineers in Q2, an increase of 28% over the prior year.
Our next priority is to continue to expand our envelope globally. We have done this across all three of our service offerings in the quarter. Within Firstcut CNC Machining service, we launched lathe-turned parts in North America in the first quarter, and in Europe in the second quarter. We are on track to launch lathe-turned parts in Japan by the end of Q3. We have also added brass as a material now available in the lathe process. Reception of the lathe offering has been very positive, and we look forward to its growing contribution through 2015 and next year.
Also in Firstcut CNC Machining, we expanded our hard metal capability. With the exceptional performance of additive manufacturing in the Americas, we are excited to expand that service offering to our other geographies. As John mentioned, we are on track to launch additive manufacturing in Europe during the third quarter, beginning with our stereolithography process. We anticipate rolling out selective laser centering, and direct metal laser centering processes in Europe, in 2016. We expect to launch additive manufacturing in Japan in 2016, as well. Within the Protomold Injection Molding service, we've expanded our capabilities, and can now manufacture significantly larger parts in liquid-silicon rubber.
And finally, we've moved magnesium injection molding, also referred to as thixomolding, out of our Protoworks R&D, into our Americas Protomold operations, as a readily available service. Magnesium injection molded parts offer design engineers the opportunity to design in magnesium, which has an excellent strength-to-weight ratio. The market for this process is not expected to be large, but our customers who are designing for lighter weight options will now have this material as a choice, in both machining and injection molding, allowing them to select the right process for their particular need.
And finally, we continuously focus on customer service. In June, we were honored to receive the Manufacturer of the Year Award at Frost & Sullivan's 2015 Manufacturing Leadership Summit. We were one of a select group of well-regarded companies, known for their manufacturing excellence, innovation and customer service. The award is a testament to our unique automated approach, which encompasses our feature-rich software upload, ordering capability and leading digital manufacturing model, which allows us to deliver prototypes and low volume, on-demand parts, cost effectively and fast. We never stop our focus on improvements to our customer-facing website and service. It is a cornerstone of the Company.
This was an excellent quarter for Proto Labs, reflecting hard work, focus on priorities, and strong execution by our employees around the world. Looking forward, we remain committed to driving our operations to achieve long-term financial targets. We review these targets periodically, in light of changing economic, currency exchange rates and other conditions. We have recently completed another review, and I would like to reiterate that we continue to target a 25% annual-revenue growth rate. Although we may not reach this target each quarter, we feel it is the right goal for the Company, given the market opportunity.
With respect to operating margins, we are adjusting our current-year expectations for our GAAP operating margin to a range of 27% to 29%. Our operating margins have been impacted by foreign currency exchange rates, and our previously communicated investments in sales and marketing efforts to drive future growth. In addition, it is also affected this year by investments in capacity, across our suite of services. Lower margin on new organically launched services, which are still being optimized. And the rapid growth of our additive manufacturing service offering, which carries a strong gross margin, but remains lower than our legacy business.
While we continue to gain experience with our newly launched services, and focus on productivity improvements and operational efficiency in our operation, we will also continue to evaluate other levers, including pricing, to drive improved margins in the business, while optimizing for revenue growth. With that, I will turn the call over the John Way for further comments on our financial performance. John?
- CFO
Thank you, Vicki. Revenue during the second quarter was $64 million, an increase of $11.1 million, or 21%, over the same quarter in 2014. Excluding the $2.2 million negative impact of currency in the quarter, revenue growth in constant currencies was 25% year over year. Protomold, Firstcut and Fineline revenues were $39.9 million, $18.6 million and $5.4 million, respectively. Our revenue in the second quarter came from 11,822 unique product developers and engineers, a 28% increase over the second quarter of 2014, and an increase of 813, or 7.4%, sequentially.
Average revenue per product developer was down compared to the second quarter last year, due to the changes in the mix of business, including the strong growth in our Fineline service, and the negative foreign currency impact. Gross margin declined from 61.8% in the second-quarter last year, to 58.7% in the second quarter of 2015. Foreign currency exchange rates had a negative impact on gross margin of 80 basis points, year over year. Additionally, as Vicki stated, our new services carry a lower margin until they reach sufficient scale, and our additive manufacturing business currently carries a lower-gross margin, as well.
The lower additive manufacturing margin had a 90 basis point impact on the Q2, 2015 gross margin. The remaining fluctuation was driven by an increase investment in capacity, in the form of labor and equipment, to meet our commitments to our customers, as an on-demand manufacturer of custom parts, by reliably delivering quality parts with quick turnaround times. Our operating expenses were in line with our previous guidance, with sales and marketing expense up $9.5 million, or 14.8% of revenue, and research and development of $4.4 million, or 6.9% of revenue. General and administrative expenses decreased from 10.5% of revenue to 9.9% of revenue.
Operating income was $17.3 million in the second quarter of 2015, compared to $16 million in the same quarter of 2014. Operating income as a percentage of sales was 27.1% in the current quarter, consistent with the first quarter of this year. Diluted earnings per share in the second quarter of 2015 were $0.44. Adding back the after-tax cost of stock compensation, amortization of intangibles, and the effect of the non-cash unrealized loss from foreign currency, our non-GAAP diluted earnings per share in the quarter were $0.50 per share.
Our capital spending during the second quarter of 2015 was $9.5 million, and included the additive manufacturing equipment in Europe to support the service launch, equipment to support continued growth in our other manufacturing facilities, and computer software and hardware. This capital investment increased our capacity in our Firstcut CNC Machining operations by 10%, our additive manufacturing operations by 25%, and our injection molding capacity by 8%, to support the growing demand across all our services. During 2015, we anticipate capital expenditures of approximately $40 million, to support our future growth, including the recently announced additive manufacturing facility in North Carolina.
During the second quarter, we generated operating cash flow of $12.4 million. Cash and investments totaled $142 million at the end of June, compared with $137.2 million at March 31, 2015. I would now like to provide some guidance into our projected results for the third quarter. We currently expect Q3, 2015 revenue to be in the range of $65 million to $68 million. This revenue guidance includes an estimated $2 million negative impact related to the exchange rates, compared to the third quarter of 2014. Adjusting for the impact of exchange rates, this guidance represents revenue growth of 23% to 28%.
Stock compensation for the quarter will be approximately $1.5 million. Amortization of intangibles related to Fineline will be approximately $185,000. Taking into consideration all of the above, we expect our quarterly non-GAAP EPS to be between $0.51 and $0.55 per share.
This concludes our prepared remarks. Operator, we will now open up the call for questions.
Operator
(Operator Instructions)
Our first question comes from the line of Brian Drab with William Blair & Company. Please go ahead with your question.
- Analyst
Good morning, and congratulations on a great quarter.
- President and CEO
Thank you, Brian.
- Analyst
Vicki, I just wanted to make sure I heard correctly. The GAAP operating margin guidance for 2015 is 27% to 29%?
- President and CEO
That is correct.
- Analyst
And then the long term target of 29%, that is still in place? And did you -- can you comment on what you would expect for 2016?
- President and CEO
Yes. We do believe that the long term target of 29% is a reasonable one for us to strive. We have got a number of levers that we can pull to continue to improve the margins from where we are right now, such as operational efficiencies and price optimization.
We have had to make a lot of investments in this quarter for the capacity that we needed to put in place, to make sure that our brand promise remains where it needs to be. And that is, we are a reliable supplier of on-demand parts, with very short lead time. And so I think the right thing for us to be doing, to make sure that we continue the growth rate we've got, and I do believe there's levers that we can pull to move us back toward that 29%.
- Analyst
Okay, great. And then, could we drill into the gross margin a little bit? And can we think about it sequentially? There's 150 basis points sequential decline in gross margin. I imagine -- you talked about year-over-year factors. But I image sequentially, you've got FX, with the pound stronger versus the euro. You had capacity additions with the lathe process ramping up. Additive is slightly higher percentage of sales, at 8.5% versus 7.8% in the first quarter. Am I hitting on the reasons? Or is there -- could you maybe add some clarity to why we are down 150 basis points, sequentially?
- CFO
Yes, Brian. I can -- you hit on most of them. So as you stated, the foreign currency, quarter over quarter, is a bigger impact. That's about one-third of that difference. We also, in the quarter, had a little bit of maintenance work that we needed to do on some of our machines. That was about another one-third in the capacity additions, in the form of labor and machines, probably made up the majority of the rest. Obviously with other puts and takes in there.
- Analyst
Okay, thanks, John. And what would you tell us about gross margin for the balance of the year?
- CFO
So, as we are looking at it -- and Vicki stated we have got a suite of services, that mix is starting to play in with the FineLine growth that we are experiencing. I would expect it to improve, over this quarter. And looking at it, probably in the 59% to 61% range.
- Analyst
Okay. Great. And then on the lathe processing, it seems like this is off to a great start. You haven't quantified -- and I know it is because it's still so early. But you haven't quantified, in any way, what you think that business could do, longer term. And can I ask it this way? Do you think the lathe process could account for more than, say, 20% of your CNC Firstcut business, eventually?
- President and CEO
Yes, I certainly do. I've mentioned before that when you look at the total available market in machining, more than 20% of the machined parts out there are made with a lathe turn part. So it will be ramping up, as customers learn to use us. As you know, our customers have to learn to come to us, and our marketing has to pull them in. And that takes time, but we are very pleased with the start. You saw that our CNC machining service grew 32% on a constant currency basis. Very strong growth. And the new services that we've launched there have certainly helped.
- Analyst
Okay, great. I have got more questions, and I will save them. Thank you.
- CFO
Thanks, Brian.
Operator
Thank you. Our next question comes from the line of Ben Hearnsberger with Stephens. Please go ahead with your question.
- Analyst
Thanks for taking my question. I wanted to dig into the success you are having introducing legacy Proto Labs offering to the FineLine users that you brought on board with the acquisition. And I know you don't release a lot of metrics around that. But I was hoping, Vicki, you could just give us a sense for how much success you are having really pushing legacy Proto Labs into that group.
- President and CEO
Right. Yes, we are cross selling, in both directions, more and more every single day. So legacy Protomold injection molding and CNC machining customers picking up additive, and vice versa. And as we are doing that, we are also developing sales tactics and sales strategies to optimize that, that are being shared as successes are undertaken.
So there is not a metric I can really share with you that's showing that, except the growth that we are seeing in product developers served, which is representing the multiple services that we are bringing to market. So we feel really good about the cross-selling. It is happening every day. Anecdotally, every single day, we are hearing more and more opportunities to do that cross selling. And we're developing the tactics to do it.
- Analyst
Okay, great. Maybe another way of getting into it would be to look at revenue per unique developer. And I know it was down this year -- or this quarter, driven by some FX, and the lower revenue of FineLine users. But maybe you could speak to when you would expect that to turn positive?
- President and CEO
Yes. I think FX and the -- both of those are played in the reduced revenue per product developer. So frankly, in Europe and in Japan, where we really don't have -- you are looking at the constant currency basis, and you're also looking at no additive manufacturing to speak of, really, our sales revenue per product developer actually went up.
So it is in the US, where we've got the impact of additive manufacturing in the mix. And as that continues to grow faster than the other services, it is going to dampen our revenue growth per developer. However, over the long term, once we get to a more stable mix, I would expect us to be growing revenue per product developer in the low single digits. But that is probably not going to be for a few quarters.
- Analyst
Okay. So it's a 2016 event. Sorry, John.
- CFO
Right. Yes. And Ben, maybe another way to look at that is really looking at the mix of business, and looking at size of order in each of our services. So our Protomold orders are the largest. So when that goes faster, the revenue per product developer number goes up. When FineLine is the lowest per order, when that service line grows the fastest, it tends to be down. So mix is playing a big component in that.
- Analyst
Sure. And then my last question, on FineLine gross margins. I know the expectation is to ultimately bring them up to legacy Proto Labs gross margins. It sounds like we have got some capacity additions that are going to play out early next year. Can you give us a sense for the timeframe on when we can expect FineLine gross margins to come up to legacy gross margins, given the announcement of the capacity additions?
- CFO
Yes, so I think, as we've talked about the last couple of calls, we are continuing to analyze the levers we have and opportunities within FineLine. We are confident we can increase the margins from where they are today, but we want to make sure that we are optimally pricing the products, as well. We think we have some pricing leverage there, and we are testing those currently. We are continuing to analyze, and making sure we are very careful with our approaches, so we don't dampen demand related to it. So I think we will improve those margins. Not certain we will get them all the way to where the legacy margins were, but we are confident we will improve them over time. And we will start to see that in 2016.
- Analyst
Understood. Thank you very much.
Operator
Thank you. Our next question comes from the line of Troy Jensen with Piper Jaffray. Please go ahead with your question.
- Analyst
Thank you. I also want to say congratulations on the nice quarter and guide, Vicki and John.
- CFO
Thanks, Troy.
- Analyst
So on the first guide was up a lot, because of the lathe business. Is there any way you can quantify how much the contribution was this quarter? Or is it too hard to figure that out?
- President and CEO
It is too hard to pull out. It was -- it is actually meeting our expectation, so put it that way. And it was a combination of lathe, and I also mentioned that we've improved our capabilities on some of our hard metal, some steels. And that has had an impact, as well. So it's a combination of envelope expansions that contributed to that strong growth.
- Analyst
Perfect. And then Vicki, for you, can you expand a little bit on this Autodesk partnership? Is this an exclusive deal? Is this just for parts? Or are they going to be using some of the design assessment capabilities, too?
- President and CEO
Yes. So yes, we are excited about this opportunity with Autodesk, because as you know, they are an important part of our ecosystem. And we view this relationship as one where it is an opportunity for us to get our name out in front of more product developers, and drive brand awareness. And help them feel comfortable to easily go over and get access to our services, because it will be a direct link right off of their software, to directly go to our website and get quotes.
So it is not a -- it's not just like the yellow pages; it is a direct link. And so we are really excited about that. We view this as one of the many tactics that we are employing to drive brand awareness, and drive customer acquisition. So we will be able to measure it to some extent, but I think it is a really a brand awareness play. But it is another one of the marketing tactics that we are deploying, to try to get more customers and drive brand awareness.
- Analyst
All right, perfect. And then just one last one for John, and just also on the gross margins. If you go back, Q1, FineLine was 7.8% of sales. This quarter, it was 8.5% of sales. But that 70 bps movement had a 90 bps erosion into your gross margins. Was that due to the quick turn capacity that you added? And I guess if we just think about quick turn -- if we think about FineLine growing faster than the corporate average, I think you mentioned 61% to 63% gross margins here, for the September quarter. It seems like a big jump, given the headwinds with the FineLine business?
- CFO
No, so let me clarify a few components of that. So the 90 basis point is the impact just on Q2. So if we were to exclude the FineLine results from the second quarter, gross margins would have been 90 basis points higher. When we look year over year, that impact is 30 basis points.
- President and CEO
And sequentially, no -- .
- CFO
And sequentially, essentially flat. Okay? So that is a little more color on those FineLine gross margins. And as it relates to Q3, I believe I said we are looking at 59% to 61% as the range for Q3.
- Analyst
Okay, sorry about that. Congrats, and good luck going forward.
- CFO
Okay. Thank you.
Operator
Thank you. Our next question comes from the line of Jim Ricchiuti with Needham & Company. Please go ahead with your question.
- Analyst
Thanks, good morning. You showed very nice growth, it looks like, across your geographies. I just wanted to maybe turn to North America, where you really are seeing some nice demand, it appears, in additive, and in the CNC machining. Did the Protomold -- is that meeting your expectations in North America?
- President and CEO
Yes, so our Protomold growth in North America was somewhat impacted by the fact that we really focused a lot of our sales and marketing, over the last couple of quarters, on integrating our additive manufacturing business. I think that's the right thing to do. It's now -- and really seeing some fantastic results there. And I think it's been the right approach, in order for our customers to really understand our full suite of services. So it is not wildly off our expectations for this year.
We will be refocusing a little on Protomold, as we go forward, to get a better balance. But I think we have integrated the acquisition quite well, and it is now really understood by our customers, our salespeople, and full suite of services. The other thing that might impact us, also, on Protomold is the fact that if you'd looked back at 2014, we had a really strong Q2 in 2014 in Protomold. So -- but that was a 30% year-over-year growth over 2013, so the comparable is tough, as well.
- Analyst
Got it. That is helpful, Vicki. You gave some color -- John did, about headcount in Europe. Just how should we think about maybe headcount additions, in general, across the Company? It sounds like there is going to be some additions in Europe. But just in general, how might we think about that, over the next couple of quarters?
- President and CEO
Yes. We are constantly -- we are growing at 25% per year. So we are having to add manufacturing headcount, in order to be able to service our customers as an on-demand manufacturer. We have continued to build our sales and marketing team, and we will be doing that, in a steady fashion, across each of our regions.
- Analyst
But it will be fairly steady, you are saying? Okay.
- CFO
Yes. I would say, as we talked about, I think there was a little bit of a step change in Q3 and Q4 of last year in the sales and marketing headcount. Now, going forward, I would anticipate headcount growth to match our revenue growth.
- Analyst
Got it. And then one final question, if I may. Just on the additive side in Europe, can you be any more specific, in terms of 2016, as you begin to introduce these services, direct metal, laser centering? Is that going to be in the early part of the year? Is that the plan?
- VP and General Manager of Europe
I'll take that question. Realistically, there is a significant amount of work still do to bring those services into Europe, and not in the least just the lead time on the capital equipment. So we will be targeting a second half of 2016 to launch those services.
- Analyst
Okay. Thank you, John. That is helpful.
- President and CEO
Yes, our full launch of Stereolithography doesn't take place until September. So we are in a soft launch now. The team has done -- I really give that team a lot of credit for getting that up and running as quickly as we did, given the amount of work that needed to happen to launch that service in Europe. The team did a great job.
- Analyst
Just on that subject, are you seeing the demand from -- early demand, I understand. But I am just curious, is this coming from some of your existing customers primarily? Or is this coming from newer customers? And I know it is early.
- VP and General Manager of Europe
It is both. Yes, we are barely marketing anything to do with additive manufacturing in Europe. So the fact that our customers are almost watching our website for an update to come on and get involved in it. So it is very, very low key at the moment, while we ramp up our capabilities there. But we are taking orders from both old and new customers, on a weekly basis.
- Analyst
Thanks a lot. Congratulations on the quarter.
- President and CEO
Thank you.
Operator
Thank you. Our next question comes from the line of Holden Lewis with Oppenheimer & Company. Please go ahead with your question.
- Analyst
Thank you and good morning. The -- I guess a couple of things. First, you alluded to this, I think, with headcount. But how do you feel the leverage-ability of your various OpEx lines are, either for the rest of the year, or at least going forward, to achieve that 29% margin? Do you feel like you'll be able to, dollars aside, just relative to revenue, will you be able to leverage selling, or leverage G&A, or leverage R&D? Are you looking just to ramp OpEx over time, at the same rate as revenues?
- CFO
Good morning, Holden. So I guess the way I would look at it, at least over the next six quarters, so sales and marketing, we will continue to invest there. And I would expect in that 15% range of revenue, as we continue to drive our targeted growth. Research and development is another area we are going to continue to invest in. So I wouldn't expect any leverage there. And the guidance of 6% to 8%, I would continue to expect those investments.
And our G&A components, we've added a bunch of services. We have to make sure that we have got the administrative capabilities to keep all of those standing up, as well, including our IT and capital investments there. So over the next six quarters, through 2016, I would not expect significant leverage. Maybe after that, we will continue to assess that, and we'll start to see leverage going forward from there.
- Analyst
The other question is, in past quarters, one of the issues affecting the revenue has been the volatility of maybe lower volume parts, particularly, I guess, in Europe. Really no mention anywhere of the low volume business, as opposed to the prototyping business. Can you maybe give us an update? Is that still -- does that seem to be stabilizing? Did we just have one good quarter, that it is still hard to predict? Or how do we think about your low volume business here?
- President and CEO
Yes. So our parts business on the growth in our Protomold parts business has been about the same as our growth in our Protomold mold business this past quarter. So pretty stable. We did have, as we mentioned before, a pretty tough comparable with prior year. But again, the growth rate across the whole produce -- the whole injection molding service offering, both parts and molds, were about the same.
- Analyst
Okay, and do you feel like that is a one quarter thing? Or -- and who knows, next quarter, it could be worse? Or do you feel like you have got a grip on this, and it has normalized and stabilized? And maybe this is not a story, at this point?
- CFO
Yes. I think that is the right categorization. And I think, as you look back in the quarters, a lot of that discussion was Europe. And a lot of that -- the component of Europe was the larger orders in previous periods, and the comparables.
So there still are times where we're doing bridge tooling to help customers get their products to market quickly. That creates spikes in volumes for us. And we will happily take that business, and serve that for them, but it is less predictable. But I think your comments are correct. We are seeing things as expected in that line.
- Analyst
Okay. So the mix of bridge tooling versus other stuff is normalized at this point. Comps are out of the way, so we just assume it is stable?
- CFO
Yes.
- President and CEO
Yes.
- Analyst
Got it. Thank you.
- CFO
Thank you.
Operator
Thank you. Our next question comes from the line of Bobby Burleson of Canaccord Genuity. Please go ahead with your question.
- Analyst
Good morning, and thanks for taking my questions.
- President and CEO
Good morning, Bobby.
- Analyst
So most of them have been answered already, but just a couple more on the FineLine business. It sounds like tripling, essentially, floor space there in Raleigh next year. Can you just talk a little bit about the mix of technologies that you expect to have, once that facility is fully ramped? Including, mainly, a focus on how much of that mix is going to be dedicated to direct metals?
- President and CEO
Our direct metal laser centering business is growing nicely, so we will be adding capacity there. But our Stereolithography and our selective laser centering business has also been growing. So we will be investing in all three services in that Raleigh facility, as we will be investing to stay ahead of the demand. Just like our injection molding and our CNC machining business, and additive, we have a commitment to our customers of reliability and speed. So as the command grows for different services, we will be continuing to add that capacity. That is why we will need that floor space. It will happen across all three services.
- Analyst
Okay, great. And obviously, gross margin has been an area where you guys have see some improvement, over time, that you can benefit from. And I am wondering, just in terms of larger operation, whether or not we should think of that business as benefiting from economies of scale? Or do you see it fragmented in nature, due to the fact it is prototyping, and maybe one off parts, so that economies of scale would not really enter into that gross margin improvement as much?
- CFO
I think eventually, economies of scale will play into it. As we move facilities, and absorb the increased space and capacity, that will be an offset of that, in the near term. But over time, I would expect to see some improvement related to those economies.
- President and CEO
I think the bigger lever that we have in our additive manufacturing services is optimizing our price, while still making sure we are not impacting close rates in the top line. But I think there are some levers that we can pull on pricing.
- Analyst
Okay, great. And do you see that -- overall, see the additive business topping out maybe at 20% of revenue? Is there a feeling that you'd like to hold it under, in terms of overall mix?
- President and CEO
I don't think there's a ceiling. We like to think that we've got our -- the product developer customer at the center of our world, and we are here to provide them -- that developer the sweetest services to meet their needs. So I think it's going to depend on how the market evolves. Now I will say, I think additive manufacturing plays a role in the product development life cycle, usually early in the product development life cycle.
And then, as customers continue to take their product to market, having an injection molding option and a machining option really allows them to accelerate innovation. So I think it will be across all three services that growth will continue. In the short term, here, I do think additive will grow faster. It is a very popular process right now. There's a lot of interest by engineers to get experience in additive manufactured parts.
- Analyst
Okay. Great. Thank you.
- CFO
Thank you.
Operator
Thank you. Our next question comes from the line of Weston Twigg with Pacific Crest Securities. Please go ahead with your question.
- Analyst
Thanks for taking my question. I just wanted to ask, on gross margin again, maybe if you can help me understand this. Some of the lower gross margin this quarter is related to capacity. And since you most likely need to continue to add new capacity to grow at your long term 25% annual target, do you think there is some risk to that long term gross margin target of 61% to 63%? I know that you said you have pricing as a lever, but it feels like, if you are in a constant growth rate -- or growth situation, that there could be some risk to that?
- CFO
Yes. Wes, as I am continuing to look at the business, and analyze it -- and I am still getting up to speed, to a certain extent. I think I can still use that excuse, right? When we established that target, we had essentially two services. So that 61% to 63% range, I think, was a tighter range. As we deploy more services, I think that range might widen a little bit, just as we introduce mix into it. Still evaluating that, to see exactly where it's going to fall out.
But I wouldn't necessarily say that the top end is at risk. I think it's just, a range -- it might be a wider range than maybe we had historically. But still relatively tight. I don't think it is a drastic swing. I think, as we are concluding new services and launching new services and new geographies, that may have some impact there (multiple speakers).
- President and CEO
This past quarter did have relatively large investment in capacity, and in hiring and training employees, literally across every one of our services. So as John said, it is a broader range, and we have had to ramp up. And as employees become more and more productive, you see some improvement there. But we have added quite a bit of capacity this past quarter.
- Analyst
That is very helpful. Related to adding headcount, can you give me an idea? You mentioned the European headcount for sales and marketing. But what is your total headcount, just for sales and marketing, right now? And can you give us a number, just a year-ago number, so we have a reference?
- President and CEO
All right. We are now -- sales and marketing -- .
- CFO
Sales and marketing globally, 278.
- President and CEO
278, okay. Where were we last year?
- CFO
Versus last year, we, at this time, were at 205.
- Analyst
Okay. Very helpful. And then just finally on the Protomold business, the lower growth there. You mentioned you are focusing on the additive manufacturing expansion. Is there any chance that there is some cannibalization happening, rather than cross selling? I know that they are totally different businesses, but I am curious what your thoughts are.
- President and CEO
No. There is no cannibalization. They are two totally different services, used in two totally different ways by development engineers. So it's -- there is tons of cross-selling opportunity. And if a customer is trying to just get a quick, easy, very early stage part, they're going to -- they may want to either do it with additive or machining. But if they want to get parts to test form, fit and function, they're going to need an injection molded part, or a part in the service or the process that they intend to scale. So I don't think there is any cannibalization.
- Analyst
All right. Very helpful. Thank you.
Operator
Thank you. Our next question comes from the line of Jason North with Jefferies. Please go ahead with your question.
- Analyst
Good morning. I was wondering if you could give any, for the additional investments in sales and marketing, and the new things you are trying, if you could give some -- or an example of what you are trying out there? Also, like how widespread across the Company is it? And you've talked about additional plans to expand sales and marketing spend. And just how that -- the new things you are trying fit into that?
- President and CEO
Right. I'll just give you an anecdotal example of how we are doing some of our cross selling. When, let's say, a customer comes in and is asking for a part to be made with additive manufacturing, early in the design process, our sales team is talking to that customer, trying to understand what's their ultimate goal with that project, how large of a volume do they expect to have. Many of them will expect to produce larger quantities at some point.
So what we're doing is, we are going to the customer and we're saying, why don't you also upload your part in Protomold, get your design for manufacturability feedback. So that then, as you do move from an additive part over to, eventually, an injection molded part, you are going to be ready with a manufactureable design. And that is really helping us pull customers all the way through the product development cycle into Protomold. So that is an example of the kind of tactics that our sales team is deploying.
- Analyst
Then, of the additional sales and marketing expenses, how much is the -- this -- you are ramping on legacy or core, versus these new investments, as we look forward over the next few quarters?
- President and CEO
Yes. So what we are doing a lot with our marketing now is, instead of marketing specific services, switching to more of a suite of services, to allow us to really help our customers understand the value that we can deliver them, across a number of processes. So I think that, in itself, is going to result in a little bit of change, versus just focusing on Protomold, or focusing on Firstcut. It is a suite of services.
- CFO
And part of the investment, or a big chunk of the investment, really is just more resources to reach out and get the messages to customers, right? Or -- and potential customers, and follow-up on leads. I think we are looking at the different approaches of how to engage those customers and really understand their needs.
- Analyst
Great. Thank you. And one follow-up here on -- for Protomold. You've seen deceleration here. FX has obviously been a headwind. Would you expect that to re-accelerate, once we start anniversarying some of these FX headwinds, starting in Q3?
- President and CEO
Q3 has also got some FX headwind in it.
- CFO
Yes. And as we look at growth rate, we did have a difficult comp this quarter in Protomold, specifically. And ultimately, we plan our business at -- across all the services, and the mix is going to change. I would expect it to improve a little bit, from a growth rate perspective, into next quarter.
- Analyst
Great. Thank you.
Operator
Thank you. Our next question comes from the line of Ben Rose with Battle Road Research. Please go ahead with your question.
- Analyst
Good morning, Vicki. Good morning, John.
- President and CEO
Good morning, Ben.
- Analyst
With regard to the vertical mix this quarter, was curious if there were any vertical markets that stood out as being stronger or weaker, relative to your historical mix?
- President and CEO
We continue to get traction in our targeted verticals, which tend to really resonate with our value proposition. So we've mentioned before those verticals that do a lot of iterations when they do product development. And accelerating product development is really important to them, so these would be verticals like medical and aerospace. Those tend to grow faster than the growth rate at large. So we continue to gain traction on that. And some of the work that we are doing in segmentation, to deliver targeted messages to those segments, I think is part of what is driving that. So we are very relevant to them.
- Analyst
Okay, so those would be two of the strongest, even this past quarter?
- President and CEO
Correct.
- Analyst
Okay. And going back to the partnership of sorts that you announced with Autodesk this past quarter, I noticed that you also have a similar type of arrangement with SolidWorks, the Dassault division. And was curious to know, is there anything different in kind about these two different relationships? Is the Autodesk one a deeper level of integration, if you will?
- President and CEO
Yes. First, we value the relationships with both of those CAD companies. So it is part of the ecosystem, and they are both really important partners to us, but it is a different service. So with the SolidWorks, we are part of a list of manufacturing partners, so to speak, on their website. We are not embedded in their software. In Autodesk, Fusion 360, which is a software as a service, it is a cloud-based software platform, we are actually in the software.
So there is an icon that the customer can click on that they then can link right over to Proto Labs, to our website. And take that CAD file that they had been working on, in the Autodesk Fusion 360, and link it right over into the Proto Labs website, for both machining and injection molding, and get design for manufacturer availability feedback and a quote. So it is much more direct.
- Analyst
Okay. Would it be part of you longer term plan, though, to have that same level of integration with both SolidWorks, as well as the other major CAD vendors, or -- ?
- President and CEO
We continue to work on opportunities to cooperate with SolidWorks on innovations that they are working on with their CAD design, as well as others, PTC and Autodesk. They are all important parts of our ecosystem. We are all trying to reach those development engineers, and delight them with what we do.
- Analyst
Okay. All right, thanks very much.
Operator
Thank you. Our next question comes from the line of Andy Netzel with Dougherty & Company. Please go ahead with your question.
- Analyst
Thanks for taking my question. I am dialled in on behalf of Andrea James. So just curious, does Proto Labs talk to companies that do warranty protection, to talk about minimizing those warranty costs?
- President and CEO
I don't think so. No.
- CFO
No. I guess maybe putting it another way, when you look at our terms and conditions, we make the part the best we can, to serve those customers. So they upload their file, but our terms and conditions don't explicitly have the warranties in there, because largely used for prototypes.
- Analyst
Got you. Also, as far as FineLine goes, what differentiates that additive manufacturing service bureau? Is it simply that ability to cross sell and serve customers by multiple touch points? Or is there something that is beyond that?
- President and CEO
First, having the suite of services certainly differentiates our Proto Labs additive manufacturing from many of the other companies that are out there. But there's a couple of other differentiators. We do deploy some additional software. That, I think, makes us much more efficient in how we take the product, the order, and move that digital thread all the way through to the manufacturing floor. So we've got some proprietary software there.
And then I think the third differentiator, which is not insignificant, we make very high quality parts. We have excellent technology around how we maintain, and how we run those machines, to make very high quality additive manufactured part for the industrial customer, not the consumer. And industrial customers appreciate that.
- Analyst
Thank you.
Operator
Thank you. Our next question comes from the line of Holden Lewis with Oppenheimer & Company. Please go ahead with your question.
- Analyst
Just a little piece of housekeeping here. Historically, or the last few years, anyway, you have achieved a 31%, 31.5% tax rate. Last couple of quarters, it has been more in the 32%, 32.5% tax rate level. Is there anything going on there? Is this the level we should be expecting going forward? Or is there some reason to think it comes down again?
- CFO
So I think there are a couple of components to that. One is the mix of business, and where our profits are coming from, with the introduction of FineLine. That is largely in the US, which carries a higher tax rate. Other component is some state taxes that, as states get more aggressive, we are incurring some of that. So between the state and the foreign and domestic mix.
There is a tax provision, related to the research credit from the federal government perspective, that is delayed in getting enacted every year, it seems like. So we tend to get a benefit in the fourth quarter, related to that, as that gets approved. But I would say 32.5% is a good place to model. And when that tax provision goes through, we would see a little bit of a down-tick there.
- Analyst
Okay, great. Thank you.
Operator
Thank you. Ladies and gentlemen, there are no further questions at this time. I would like to turn the floor back over to Vicki Holt for closing remarks.
- President and CEO
Thank you for joining us today. I want to thank all of our employees around the world for their commitment, hard work and excellent execution of our strategy. We are excited about the opportunities ahead in 2015 and beyond, and remain focused on getting the work done. We look forward to updating you on our progress next quarter. Thanks very much.
Operator
Thank you, ladies and gentlemen. This does conclude our teleconference for today. You may now disconnect your lines at this time. Thank you for your participation, and have a wonderful day.