Selective laser sintering (SLS) is one of our most popular additive manufacturing prototyping methods because of its throughput and capacity for delivering on large projects. During SLS, 3D objects, large and small, are created with tiny particles of powder. They are fused together with heat generated from a high-powered laser, one layer at a time. The unmelted powder is brushed away during post-processing. The resulting parts are durable, stable, and accurate, eliminating the need for many machining, tooling, casting, or other secondary operations. The parts can be sent to our in-house finishing department.

Our SLS Department can create durable plastic parts directly from many solid CAD models in just days—and, in most cases, as soon as the next day. Now that’s rapid prototyping. Most of our SLS prototypes are made from nylon, glass-filled nylon, and elastomer.

Midwest Composite Technologies uses two platform sizes:

  • The larger build envelope is 26.6 x 15 x 22.9 inches. Parts made in large-platform SLS are produced within an accuracy of +/-.005 inch or +/-.0015 inch per inch, whichever is greater.
  • The smaller build volume is 13 x 11 x 16 inches.Parts made in small-platform SLS are produced within an accuracy of +/-.005 inch or +/-.001 inch per inch, whichever is greater.

Benefits of Nylon Prototypes

Large Volume




“Midwest Composite did all our samples and prototypes. They can handle pretty much whatever you need.”
“You’re the man! Thanks again. You’re making me look good.”
“Just want to say thanks so much for your hard efforts on all these orders. You guy’s rock!”
“You are my hero!!! Thank you!!”
“Just got the parts and they look great! Thanks again for turning these around so quickly. Thanks, the prototype was well-received by our customer.”
“Thank you very much for welcoming us into your facility today! It is quite impressive and was a great experience for the whole team. We appreciate the valuable time that was dedicated to our group.”
“Thanks again for being so reliable. It’s always an easy decision to take our requests to you. All of the prototype parts that you made for me turned out perfect! Thank you again for your timely delivery and high-quality output.”
“Thanks! Such great work and a very quick turnaround. Thanks so much for getting us those SLS parts, our customer was EXTREMELY happy with the finish and send their thanks.”
“Everyone that stopped by came away very impressed with the quality and attention to detail. Our display had all of the moving parts where we could show off all of the new features. Also, the way it was packaged, there was zero damage whatsoever. Thanks again for all of your help on this!”
“I just got back into the office today to find my handles here. I opened the boxes and was really impressed! These are beautiful!”
“THANK YOU for your excellent service!!!!”
“Wanted to send you a quick email thanking you very much for your impressive work on this crazy intricate part. The parts look great and I appreciate the fast response. Thank you!”
“Thanks so much Helmut, I certainly am glad you can get it taken care of!”
“We have got a lot of tooling back from your shop and everything seems to look good. I just wanted to send you and your team a note of gratitude. Your timing and quality have been great.”

Let’s get started today. Contact Us