from left to right:

1. 3D-Print (PLA) with the first layer of silicone for the mold

2. silicone mold (left) with the mother-mold (in the back) and a first test-positive made of wax (on right)

3. vacuum-formed acrylic over plaster positive (already partially chiseled out)

4. polystyrene frames (purple) with ceiling attachments and vacuum-formed acrylic