Edit 3MF files online, free and in your browser. Open a 3MF, resize to exact millimetres, combine and hollow it, repair the mesh, and export 3MF, STL, OBJ, or GLB. No install, no sign-up to start.
Open a 3MF, resize it to exact millimetres, combine and hollow it, repair it for printing, and export 3MF, STL, OBJ, or GLB — free, in your browser, no install.
Free to use · Runs in your browser · Start without an account
3MF keeps units and scale where STL doesn’t — and OwlCAD is built around true millimetres, so it’s a natural fit.
Drag a .3mf onto the build plate — or import an STL and export 3MF. OwlCAD reads and writes both, plus OBJ and GLB, with units detected on the way in.
3MF carries real-world units, and OwlCAD works in true millimetres, so parts keep their intended size. Move, rotate, and scale to exact values.
Boolean union, subtract, and intersect your 3MF against parametric shapes — merge parts, add tabs, or cut holes, non-destructively.
Shell a model to a set wall thickness, add drainage holes, and run the print check to repair non-watertight geometry before your slicer sees it.
No download, no account needed — your work saves in the browser as you go.
Yes. Open, edit, and export 3MF files free in your browser — no install, no sign-up to start. Only AI generation is part of the paid Pro plan.
Drag a .3mf onto the build plate, then move, rotate, and scale to exact dimensions, combine it with parametric shapes using booleans, hollow it into a shell, or repair the mesh — then export 3MF again.
Yes. 3MF carries real-world units, and OwlCAD works in true millimetres throughout, so a part keeps its intended size on import and on export — ideal for 3D printing.
Yes — import either and export the other (plus OBJ and GLB). 3MF is the more modern, slicer-friendly format; OwlCAD reads and writes both.