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Formlabs Fuse Depowdering Kit Sifter 150 Sieve (150 μm)

Formlabs Fuse Depowdering Kit Sifter 150 Sieve is a replacement and accessory sieve for the Fuse Depowdering Kit, designed to filter unsintered SLS powder after part extraction. Its 150 µm mesh removes clumps and debris before powder is reclaimed and stored for the next build — compatible with all Formlabs SLS powders except Nylon 11 CF, and supported by the Fuse 1 and Fuse 1+ 30W printers.

Mesh Size 150 µm
Compatible Printers Fuse 1, Fuse 1+ 30W
Powder Compatibility All Formlabs SLS powders except Nylon 11 CF Powder

What the 150 µm Sieve Does in Your SLS Workflow

Every SLS build leaves behind a mix of reusable powder and solid debris — broken chunks from the cake, fused fragments from the print enclosure, or loose contamination picked up during extraction. Left unfiltered, this debris enters the next cartridge and risks blocking the recoater or introducing print defects. The Sifter 150 Sieve addresses this directly: after the Fuse Depowdering Kit extracts parts, unsintered powder is funnelled through the 150 µm mesh. Particles larger than 150 micrometres — chunks, sintered fragments, and foreign matter — are captured and discarded. Clean powder passes through and flows into a storage cartridge, ready for the next build at the correct refresh ratio.

The result is a closed, contamination-controlled powder loop. Recovering and reusing unsintered powder is one of the main economic advantages of SLS over other additive processes, and a clean sieve is the single point in that loop where powder quality is verified before it re-enters the machine.

The image below shows the complete Sifter 150 assembly: the stainless steel vibrating unit with integrated funnel outlet (right) and the detached 150 µm mesh screen with catch tray (left).

Formlabs Fuse Depowdering Kit Sifter 150 Sieve — stainless steel vibrating sifter unit with funnel outlet and detached 150 µm mesh screen and catch tray

Compatibility Notes

The 150 Sieve is compatible with the full range of Formlabs SLS powders: Nylon 12, Nylon 12 GF, Nylon 12 Tough, Nylon 11, TPU 90A Powder, and others — with one exception. Nylon 11 CF Powder (carbon-fibre reinforced) requires the coarser 300 µm sieve due to the chopped fibre content, which would clog a 150 µm mesh. If your workflow includes Nylon 11 CF, ensure you have the correct Fuse Depowdering Kit Sifter 300 Sieve on hand for that material.

Expert Verdict: The Sifter 150 Sieve is a low-cost consumable with a direct impact on powder quality and machine longevity. A degraded or clogged sieve allows oversized particles to re-enter the cartridge; these can cause recoater drag, uneven powder bed density, and print failures — problems that are difficult to diagnose and expensive to fix. Replacing the sieve at the first sign of mesh deformation pays for itself in one avoided failed build. It ships as part of the Fuse Depowdering Kit and is available as a standalone spare for ongoing operations.
Tech Tip: Inspect the sieve mesh after every 10–15 build cycles, or whenever you switch powder types. Fine glass-filled powders (such as Nylon 12 GF) are more abrasive and can accelerate mesh wear. If you run multiple materials, consider keeping a dedicated sieve per material type to eliminate cross-contamination in the sifting stage.

Technical Specifications of Formlabs Fuse Depowdering Kit Sifter 150 Sieve

General

Mesh Size 150 µm
Compatible Printers Fuse 1, Fuse 1+ 30W
Compatible Powders All Formlabs SLS powders except Nylon 11 CF Powder
Included With Fuse Depowdering Kit
Nylon 11 CF Alternative Fuse Depowdering Kit Sifter 300 Sieve required

Why Choose EXPERT3D?

EXPERT3D has been a specialist in 3D technology since 2012, supporting engineering teams and production departments across Spain with hands-on technical expertise. We stock Formlabs SLS accessories including the Fuse Depowdering Kit Sifter 150 Sieve, with rapid shipping across Spain and Europe. Our team can advise on post-processing workflows, consumable replacement schedules, and powder management best practices. Order directly from our online store with transparent pricing in EUR (€) and full official warranty coverage.

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