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What design file formats and size limits do you accept for SLS printing?

Last updated on Apr 01, 2026

We accept .stl, .obj, .step and .stp format 3D design files, with a single file size limit of 500MB. To ensure efficient order review, compressed ZIP/RAR folders are not recommended for upload, and the design files should be free of broken holes and invalid geometric structures.


All design files must have no broken holes. Keep main wall thickness above 1.2 mm, and ensure the thinnest feature is at least 0.8 mm. Thinner structures will bring printing failure and post-processing risks.