Union
Merges overlapping parts into one solid and deletes the surfaces buried inside.
boolean, merge solid, weld, combine solid, watertight, seal- Category
- Modifiers
- Outputs
- mesh
- Runs live in
- no target yet
When parts overlap, the faces hidden inside one another are still there, still drawn and still exported. This removes them and leaves a single sealed skin.
It does not reduce the triangle count, and it is not meant to: cutting each face along the seams adds more than the hidden faces removed. What you get is a correct outline, no flickering where two surfaces meet, one watertight solid that exports as a single part, and a clean edge for a bevel to work on.
Use it on simple convex parts, blocks and prisms and hulls. Do it last, then chamfer.
Inputs
| Socket | Type | Wiring |
|---|---|---|
| mesh | geometry | accepts several |
Parameters
| Name | Type | Default | Available when | What it does |
|---|---|---|---|---|
| Double Sided | checkbox | off | always |
Watch out
This is the end of the line for per-piece identity. The surface is rebuilt, so anything downstream that relied on separate pieces will not see them any more.
Built with this node
- Combine and cutHow-to
See also
- joinGeometryWhen the parts should stay separate objects rather than becoming one solid.
- differenceThe opposite operation: removing one shape from another.