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3D surface rough

3D surface rough removes bulk material from one or more imported models in horizontal levels. Select several models to rough them together as one surface. Use it before 3D surface finish when the model needs a controlled roughing pass rather than a 2.5D pocket.

3D surface rough cutting paths around the Busto head, neck, and base
On the Busto model, roughing clears material at successive levels while leaving stock for the finish pass.
Simulated Busto stock after roughing, with stepped levels around the head and face
The rough simulation shows the bust emerging in steps, before the surface finish pass.
Requirement Value
Target features One or more 3D model features; regions can limit the cut
Tool Flat or ball endmill
Passes Rough only

Shared settings are documented in Common operation parameters.

Parameter Description
Pattern Chooses Offset, Seeded circles, Parallel, or Trochoidal coverage at each level.
Stepdown Sets the vertical distance between roughing levels.
Stock to leave radial and Stock to leave axial Leave wall or floor material for surface finishing.
Finish walls and Finish floor Control the optional finishing work on eligible surfaces.

The roughing patterns are described in Clearing patterns, Seeded-circle clearing, and Trochoidal cutting. It also supports entry and exit moves and feed reduction.

The operation protects the selected models’ cross-sections and retained 2.5D material instead of simply cutting every horizontal band. Imported models that are not targeted and 2.5D add features remain protected from their top down, including levels below their bottom. Roughing does not clear underneath a neighbouring part whose bottom sits above the cut. Nearby features, regions, clamps, and tabs can therefore split or omit a pass. Review the warnings and the preview rather than assuming each level is continuous.