Craig Dabler - The DIY Castings Guy | Mold Making - Powder Separation - Experiment @craigdabler-thediycastings7511 | Uploaded February 2022 | Updated October 2024, 5 hours ago.
Using the high durometer mold rubber I am showing a method for making a Vulcanized rubber mold of a bronze wide band ring. Kind of an experiment that should work.