Reverse Engineer a Mesh to a Solid Model
Upload your mesh (STL, OBJ, PLY, or 3MF) to Paramesh AI. The pipeline automatically segments surfaces, fits geometric primitives, recognizes manufacturing features, and constructs a parametric solid from scratch. The output is a clean STEP file with a full feature tree — not a tessellated wrapper.
The reverse engineering challenge
Triangulated meshes from 3D scanning, 3D printing slicers, or mesh-based CAD exports contain no design intelligence. Every face is a flat triangle — there's no concept of "hole" or "chamfer." Reverse engineering recovers this intelligence from the geometry alone.
Paramesh AI's approach
Rather than fitting NURBS surfaces to the mesh (which gives you a surface model, not a parametric one), Paramesh AI takes a manufacturing-first approach:
- Segment the mesh into regions that belong to analytic surfaces
- Fit exact planes, cylinders, cones, and spheres to each region
- Build a topology graph showing how surfaces connect
- Classify edges as sharp, filleted, or chamfered
- Recognize manufacturing features (extrusions, holes, pockets)
- Reconstruct the part using sketch-extrude-cut operations
What mesh formats work?
Paramesh AI supports STL, OBJ, PLY, and 3MF. The pipeline handles non-watertight meshes, flipped normals, degenerate faces, and duplicate vertices automatically.