You can be pretty precise in blender - you can manipulate geometry to real world units easily. However unlike parametric CAD the geometry is mostly faces, edges

You can be pretty precise in blender - you can manipulate geometry to real world units easily. However unlike parametric CAD the geometry is mostly faces, edges and verts. There are a lot of great resources online. BlenderGuru is probably the most popular. This is one I came across here on HN that I like https://learntemail.sam.today/blog/blender-for-hackers-3d-modeling-is-just-like-using-vim/ https://learntemail.sam.today/blog/blender-for-hackers-3d-mo...