Untessellator

Gallery Support
Color by
C
Left: paint · Shift: brush · Alt: erase · [ ]: brush size · T: triangle edges · C: color by
Right-drag: orbit · Ctrl+right or middle: pan · Wheel: zoom · F: fit · right-click a group: menu
Open or drop an STL, OBJ or 3MF file

Untessellator converts STL to STEP with real CAD faces: exact planes, cylinders, cones, spheres and tori instead of thousands of triangles. It's free and runs in your browser, so your file never leaves your computer.

Untessellator

Untessellator is made for a desktop

It turns STL, OBJ and 3MF meshes into STEP files with real CAD faces: exact planes, cylinders, cones, spheres and tori instead of thousands of triangles. Painting those faces takes a mouse and a big screen, so open untessellator.com on a computer to convert a file.

See how it works in the gallery