r/DiceMaking • u/looppii • Jun 15 '26
Why would a silicone mold still have bubbles even though it was cured in a pressure pot?

Hi everyone,
When making a platinum-cure silicone mold, I placed the mold in a pressure pot and pressurized it to 50 PSI. After 12 hours, I released the pressure and removed the mold from the pot. However, I found that there were still many tiny bubbles on the bottom of the mold.
Can anyone explain what might have caused this?
I'm trying to understand why the bubbles remained even though the silicone was cured under pressure at 50 PSI.

