PolyNURBS
Model smooth organic parts from a quad control cage with subdivision surfaces, or wrap a faceted mesh into an editable cage.
Product pages are in English.

Highlights
- Split, dissolve, bridge, extrude, pull, shell, pattern and symmetry editing on the cage
- Wrap STL, OBJ or STEP, or a result sent straight from the Topology Optimizer
- Re-wrap a thin region at its own resolution as a new body when a coarse wrap loses it
- Deviation from the source mesh reported as RMS and maximum error
- Export STL, OBJ or 3MF or the cage; save inputs on your computer or in your cloud
A question it answers
My topology optimisation gave me a faceted STL — how do I turn it into a smooth part I can edit and print?What you put in
Cage primitives and strut networks, or an imported STL, OBJ or STEP file, or a mesh handed straight over from the topology optimiser; wrap resolution; shell wall thickness; symmetry planes; edit operations including split, dissolve, bridge, extrude, pull and pattern.
What you get
Editable control cage plus its smooth limit surface; a deviation plot against the source mesh with root-mean-square and maximum error reported numerically; validation report for self-intersection and non-manifold edges; export to STL, OBJ and 3MF, and the cage itself as JSON.
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