I created a crystal mesh 130mm x 120mm x 250mm high for 3d printing using sculpt. Now I want to add a tube within it and add some scaffold primitives to the inside of the mesh joining the tube for strength.
How do I combine the tube and cubes to the mesh to create a single entity for turning into an stl file for printing?
I know it needs a 3d print thickness and have tried adding thickness to the mesh, also getting a clean hole in the base for joining the tube to is an issue, its a saw tooth edge I have join?