05-04-2010, 11:27 AM
I had another noob question for the casting gurus, 
Is is necessary to Vacuum degas your silicone, if you cure the rubber mold under pressure. I'm not asking about personal preference so much as actual fact. I don't see any need for a vacuum chamber if pressure curing will serve the same purpose. The pressure pot can force air bubbles into suspension. Enough even for clear resin casting. It should do the same with rubber. Let me know if I'm totally daft, Cheers,
Joe
Is is necessary to Vacuum degas your silicone, if you cure the rubber mold under pressure. I'm not asking about personal preference so much as actual fact. I don't see any need for a vacuum chamber if pressure curing will serve the same purpose. The pressure pot can force air bubbles into suspension. Enough even for clear resin casting. It should do the same with rubber. Let me know if I'm totally daft, Cheers,Joe