RPF PREMIUM MEMBER
Yeah, It's an interesting subject. It's actually silicone with a plaster core due to negative draft around the ear-area. When the shot is pulled and cooled, the inner core is removed first and the silicone skin after that. Works fine but needs some extra time to cool between shots.Very cool. That is a heavy duty machine. Don't think it thinned out much. Barely made it at the bottom. Do you know what material was used for the buck?
Not pushing the buck in. Positive buck, bake or otherwise heat material, drape over buck, pull if needed, then cool.Right now I favor a negative buck and vacuum to pull heated PETG sheets into it. Not sure what you mean by gravity form? Pushing the buck into the heated sheet?