EXTRUDE — Extrude

Creates a solid by extruding a closed profile a given height.

• Command: EXTRUDE · Global name: _EXTRUDE · Alias: EXT
• Ribbon: Home › Draw

Creates a 3D solid by extruding one or more closed profiles a given height, like AutoCAD's EXTRUDE. Modeling uses the truck kernel (pure Rust) and the result is stored as an ACIS 3DSOLID, just like AutoCAD.

Usage

1. Type EXTRUDE or click it in the ribbon.
2. Select one or more closed profiles (polylines, circles, ellipses…) and press Enter.

Select the closed profiles and press Enter:

3. Enter the height (positive towards +Z, negative towards −Z).

Extrusion height:

Exact vs faceted

• Polygonal profiles (straight edges only): the solid is exact; AutoCAD audits it with no errors and MASSPROP reports the exact volume.
• Profiles with arcs or curves: the outline is approximated with segments and the solid comes out faceted.

Notes

• The extrusion starts at the profile's Z (the elevation of the polyline or circle: the ELEV one if it was drawn with it) and is vertical. Profiles on tilted planes, path and taper angle come in a later phase.
• See also REVOLVE, UNION, SUBTRACT and INTERSECT.