The most profound innovation of Profile Builder 404 is the "Carry Along" feature. Traditionally, if you needed a pipe with insulation and a cladding, you had to draw three separate paths. PB4 allows nesting: one primary profile (the pipe) "carries along" secondary profiles (insulation and cladding) that follow the same path but offset radially.
He wrote down the steps for the community forum: profile builder 404 for sketchup 20212024
: Users with a PB3 license typically need to upgrade to a PB4 license to activate the extension in SketchUp 2024. The most profound innovation of Profile Builder 404