Clean
Clean fixes the small faults almost every AI-generated or downloaded model has, in one step. It closes hairline cracks, removes faces with no area and deletes the tiny fragments floating around the model. Put it right after Import, and after a Transform that gives the model its real size.
What it fixes
Section titled “What it fixes”Select any node and the stats strip under its parameters lists what is wrong with its mesh. Clean fixes three of those faults, each with its own switch:
- Cracks. Two open edges that nearly touch are joined into one, so the surface closes. Only open edges are joined, so fine detail on a closed surface is never merged. Texture seams stay as they were, and separate parts of an imported model are never joined to each other.
- Faces with no area. Squashed faces that cover nothing are removed, and the faces around them are joined up so no hole opens.
- Small pieces. Floating specks much smaller than the model are deleted. Pieces that touch count as one, so a small part resting on a bigger one stays.
When it changes something, the node shows an amber note saying what it did, for example Clean removed 8 small pieces (49 faces). Check the stats strip on the Clean node afterwards: the cracks and small pieces are gone.
After Clean
Section titled “After Clean”Clean keeps the model’s textures, materials and part names. When you export an imported model, only the parts Clean changed are rewritten, and every other part is written exactly as the file had it. If you bake textures later in the chain, bake from Clean’s output, so the deleted fragments are never copied.
Inputs
Section titled “Inputs”The mesh to repair.
Outputs
Section titled “Outputs”The same mesh with its cracks welded, its degenerate faces gone and its small floating pieces removed.
Parameters
Section titled “Parameters”| Parameter | What it does | Default |
|---|---|---|
Weld | Closes cracks: open edges whose points nearly touch are joined. | On |
Weld distance | How close two open points must be to be joined. Shown when Weld is On. | 0.05 cm |
Drop degenerate faces | Removes faces with no area, keeping the surface closed. | On |
Remove small pieces | Removes tiny floating fragments. | On |
Small piece size | How small a piece must be, next to the largest, to be removed. Shown when Remove small pieces is On. | 1 |
See also
Section titled “See also”- Import: bring in the model to clean.
- Transform: give the model its real size first, with Fit size.
- Polyreduce: lower the triangle count after cleaning.
- Topology nodes: the other nodes that change the polygons, not the shape.