All the pieces of the mold can be printed without supports with any material that you have available. You need 2 x M3x30, 5 x M3x20 screws and 7 x M3 nuts. The silicone sock should be made with high temperature silicone. I've provided the .stp file as well for future improvements. I would appreciate to post your makes and and some feedback. Happy printing !
The author hasn't provided the model origin yet.