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3D Printing Industry: Formlabs Fuse 1 & Sift In-Depth Review

Read this in-depth engineer's report by 3D Printing Industry that includes a review of Formlabs' SLS 3D printers and detailed results of accuracy testing.

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  1. Introduction
  2. Packaging
  3. Fuse 1 hardware
  4. Sift hardware
  5. Slicer
  6. Use of the printer
  7. Printing tests
  8. Conclusion


The Fuse 1 is an SLS 3D printer designed by Formlabs, a US (Somerville, Massachusetts-based) company founded in 2011, the company provides a wide range of 3D printers. Formlabs is known as a leader in additive manufacturing in the world and its best-known model is the Form 2. For this new SLS setup, announced in 2017, the range is made up of one printer and one cleaning station, the printer is the Fuse 1, and the post-processing station, the Sift. Both of these machines complement each other in the SLS printing process. Formlabs develops 3D printers with ease of use and versatility in mind, to offer high-quality 3D printing to a variety of users. The company’s flagship ‘Form’ range is suitable for prosumer and industrial users. However, the Fuse 1 SLS system can only print two different materials (Nylon 11 and Nylon 12), but Formlabs is working hard to extend the range of powder usable with this machine. Formlabs is now well-known in the 3D printing solutions market thanks to its high-quality systems.

The Fuse 1 is one of the latest additions and is made for professional use. It has a large build volume with one laser diode SLS. The workspace is a 165x165x300 mm³ cuboid. Other key features claimed by the 3D printer, to be discussed in this report, are as follows.


The Formlabs Fuse 1 printer and Sift post-processing station come with a pack of useful accessories.

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