Trim surfaces to meet the edges of other objects.

An important step in the surface modeling workflow is trimming surfaces. You can
trim a surface where it meets an intersecting object or you can project geometry onto
a surface as a trimming edge.

When a surface is trimmed, the removed surface areas can be replaced with SURFUNTRIM.

NOTE: SURFUNTRIM does not restore areas removed by the SURFACEAUTOTRIM system variable
and PROJECTGEOMETRY. It only restores areas trimmed with SURFTRIM.

The Properties palette indicates if the surface contains any trimmed edges.

## Projecting Geometry onto Surfaces, Solids, and Regions

Similar to projecting a movie onto a screen, you can project geometry onto 3D solids,
surfaces, and regions from different directions to create trimming edges. The PROJECTGEOMETRY
command creates a duplicate curve on the object that you can move and edit. You can
also trim against 2D curves that do not actually touch the surface, but that appear
to intersect the object in the current view.

Use the SURFACEAUTOTRIM system variable to automatically trim a surface when you project
geometry onto it.

### Options for Projecting Geometry

Project geometry from 3 different angles: the Z axis of the current UCS, the current
view, or a path between two points.

• Project to UCS – Projects the geometry along the positive or negative Z axis of the current UCS.
• Project to View – Projects the geometry based on the current view.
• Project to Two Points – Projects the geometry along a path between two points.

>About Trimming Surfaces. Trim surfaces to meet the edges of other objects. An important step in the surface modeling workflow is trimming surfaces. You can trim a surface where it meets an intersecting object or you can project geometry onto a surface as a trimming edge.Trim a Surface to a Projected Curve Use this procedure to use geometry that visually intersects a surface from the current view as a cutting edge for trimming.trimmed surface has two parts: a surface that underlies everything and defines the geometric shape, and trimming  …Dec 30, 2013Nov 5, 2010Trim tool to trim a parting surface. You can select a datum plane or an existing surface feature to use as a reference for trimming another surface.surface, plane, or sketch as a trim tool to trim intersecting surfaces. You can also use a surface in conjunction with additional surfaces, as mutual …Trim SurfaceYou can use a surface, plane, or sketch as a trim tool to trim intersecting surfaces. You can also use a surface in conjunction with.trim surfaces, and then converted it into ts surface,but the original trim has expired, and i have to re-trim it again.Trimming surfaces, part of SOLIDWORKS: Surfacing.

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