Fused deposition modeling (FDM) technology is highly accurate for smooth surfaces using engineering grade or high-performance thermoplastic. This plastic material is chosen for its strength, flexibility, resistance (heat, chemical or UV), electrostatic properties, medical safety, and more. A full array of finishing options can be applied and color-matched to meet specifications.

FDM works by extruding heated, semiliquid thermoplastics one layer at a time. Midwest Composite Technologies uses Stratasys Fortus 900mc systems and Stratasys Fortus 400mc systems for making FDM parts. The Fortus 900mc and Fortus 400mc extrude both modeling material and support material. After the part is completed, the support material can be broken off or washed away with detergent and water.

Part tolerances distinguish the Fortus series from other 3D systems. Fortus systems are designed and manufactured for the highest accuracy and repeatability. Parts made in the Fortus 900mc are produced within an accuracy of +/-.0035 inch or +/-.0015 inch per inch, whichever is greater. The Fortus 400mc has an accuracy of +/-.005 inch or +/-.0015 inch per inch, whichever is greater.

Available Thermoplastic Materials

One advantage of the Fortus systems is the wide variety of thermoplastics available. You can choose standard, engineering-grade, or high-performance thermoplastic. You can also base your decision on high heat and chemical resistance, translucence, biocompatibility, and so on. Click on the materials listed below to find out more about them.

We are licensed for all of these materials and run multiple materials each day.

The Fortus 900mc also has a large build envelope of 36 x 24 x 36 inches. For more information on the Fortus 900mc, read the datasheet.

The Fortus 400mc (with an upgraded configuration) has a build envelope of 16 x 14 x 16 inches. For more information on the Fortus 400mc, read the datasheet.

 Benefits of Thermoplastic Prototypes




Resistant (Heat, Chemical, UV)

FDM Photo Gallery

“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.”

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