View Single Post
Unread 03-16-2013, 02:53 PM   #14
Extremely registered user
verdatum's Avatar
Join Date: Jul 2006
Posts: 3,583
Grinding up cured silicone to use a filler does in fact work, but as you discovered, it needs to be similar cure-type. Additionally, you want the silicone to be as clean as possible.

Vacuum degassing after mixing everything up is also a really good thing to do if you have the resources. Small air-bubbles like to cling to the chunks, weakening the mold.

I have a 5-gallon bucket full of dead molds and flashing scrap. One of these days, I'm gonna buy an old-timey meat grinder and use it only for grinding up junk silicone.
Founder Special FX wiki
verdatum is offline   Reply With Quote