How to convert 3DM to DAE
- Add your .3DM file - drop it in the box above or click to browse.
- Convert it to .DAE in a few seconds.
- Download your new .DAE file.
What to expect
- NURBS surfaces are tessellated to a polygon mesh - exact CAD precision is not preserved.
- Curved surfaces are only as smooth as the mesh resolution, so fine detail may be faceted.
- DAE references textures as external image files rather than embedding them.
Frequently asked questions
Does the geometry stay accurate when converting 3DM to DAE?
Not exactly. A 3DM file stores precise NURBS surfaces, while COLLADA (DAE) describes polygon meshes, so surfaces are tessellated into triangles and the exact mathematical geometry is approximated.
Why convert 3DM to DAE?
COLLADA is a plain-text XML interchange format that Blender and many 3D tools read directly, and it is a common step toward web and AR formats like glTF/GLB that 3DM cannot feed.
Where can I open the DAE file?
DAE opens free in Blender on any platform, and on a Mac it can be previewed in Preview. It is a widely supported 3D interchange format.
What is lost in this conversion?
The parametric NURBS precision. Once surfaces become a triangle mesh they can no longer be edited as exact CAD geometry, and fine curvature is only as smooth as the mesh density allows.
Programs that convert 3DM: PolyTrans|CAD+DCC · Autoconverter · Online CAD converter · Babel3D · AccuTrans 3D
