If you need non-planar trimming (e.g., trim a cylinder by a curved face) or multiple cuts, free plugins will fail. In that case, consider:
To download the Trim Object by Face SketchUp plugin for free, follow these steps: trim object by face sketchup plugin free download
This is the most popular tool specifically designed for this task. It allows you to select a face and use its boundary to "slice" through any grouped objects it intersects. It is often available as a free or "name your price" download on Gumroad or the SketchUp Extension Warehouse . If you need non-planar trimming (e
Eneroth3 (a well-respected freeware creator) This is the best permanent free solution . It is often available as a free or
One of SketchUp's native strengths is push-pull geometry, but when it comes to trimming one complex object (like a group or component) using another object's face—similar to a cookie-cutter or 3D stencil—the default tools often fall short. This leads many users to search for a plugin.