Silicone Rubber Mold Frame Pieces

I wanted to make a Silicone Rubber mold to cast some clear plastic parts. I found a Let's Resin Mold Making Kit. It came with some mold frame pieces that can be clamped together with 1" paper clamps. Unfortunately, it came with a limited number of clamps and corners that only went one direction. I designed similar frame pieces that also included corners that could turn the opposite direction. I used tape on the bottom of the mold to seal it and to hold the pieces to be cast down.

A link to the things I used in this project are at: https://www.printables.com/model/837394-silicon-rubber-mold-frame-pieces

Unfortunately Thingiverse messes with product links :-(