Opens anything a slicer would
Watertight prints, scans, Thingiverse downloads, and parts out of CAD all open. Multi-part files arrive as separate parts.
STL + MechaPaint
The 3D printing format. Open any STL, add real geometry and detail, and export at true millimeter scale for your slicer.
WHY MECHAPAINT
From STL to a better STL, at the size you meant
STL files open as plain gray meshes ready for the mesh tools. Add bolts, knurling, panel lines carved as real geometry, snow, cables, or a textured surface from a height map, then export an STL in millimeters that your slicer reads at the right size on the first try.
Real geometry, not just paint
Texturize turns a height map into displaced geometry on a part. The Bolt, Snow, Cable and Pipe, Droplets, and Spider Web tools add printable geometry. PolyShave and Decimate thin a heavy scan.
Millimeters, measured
Measure the model against a known object, or set its size outright, and Export STL writes it in millimeters. The print comes out the size you planned.
Print mode thinking
The Bolt Lab splits a bolt into flat-backed halves for printing. The same scale and watertight rules carry through every STL export.
PIPELINE
Open, improve, slice
01
Open the .stl
Drag it on. The model shows up gray and ready.
02
Shape it
Texturize, Bolt, Scalpel, Smooth, PolyShave, Decimate, and the geometry generators, as the job needs.
03
Export STL
Export STL... from the tool bar or File > Export. Millimeters, watertight, slicer ready.
Your printer gets exactly what you built.
Download, Windows & Mac Buy while it's half offBuying unlocks watermark-free exports.