Hi, hope someone can help me out here. I have the stl files for several gear shift knobs and would like to use these to make 3D printed moulds so that they can be re-cast accurately numerous times.
I have no experience of Blender or Meshmixer, they fry my brain, and I’ve never used a 3D printer so what I’m really asking is:
is there anyone who can either help me with a step by step workflow or perhaps even create the files for me if it’s not too arduous a task for the knowledgeable?
The general idea is to model a rectangular prism, import your STL, then subtract the STL from the rectangular prism. How you do that will depend on what software you are using.
In FreeCAD there are a few steps. Here’s a thread where someone was trying to subtract a screw from a solid, which is logically equivalent to what you are trying to do:
TinkerCad would also be able to handle this and it’s the simplest 3d modeler that I’m aware of. There are plenty of tutorials you can google to get you started.
