I am new at SU and am trying to create model to 3D print in plastic, which I can then use as a mold to cast acrylic. (Think: The inside surface of a mask.) So, I’ve created an example of the object I want to cast in acrylic. Now, I need to make the inverse of that (or in other words the negative space of the object or a shell of the object’s surface) to print in plastic- so that when I fill the 3D printed plastic with liquid acrylic, it will cure into the shape I’ve created in this file:test.skp (398.1 KB)
How can I make something that is simply the shell of the top surface of the object? Please help! Thanks in advance!