The full-featured, commercial 3skeng plugin is not free.
You can experience the full power of 3skeng without an upfront commitment. 3skeng plugin sketchup free
3skeng is a plugin for SketchUp that allows you to create complex, parametric 3D models using a simple and intuitive interface. It provides a range of tools for creating and manipulating 3D objects, including extrusions, sweeps, and lofts. The full-featured, commercial 3skeng plugin is not free
When it comes to specialized design within the MEP (Mechanical, Electrical, Plumbing) and sheet metal fabrication industries, remains a favorite for its intuitive interface. However, native SketchUp lacks the advanced piping, ductwork, and parametric components required for professional industrial design. Plumbing) and sheet metal fabrication industries
This is the most popular tool. It allows you to route pipes, place valves, and generate isometric drawings.