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ABS Mold and Air Bubbles?

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return2300

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I've been experimenting using ABS as a mold for awhile and I haven't been able to figure out a way to eliminate air pockets. I do everything I can think of to keep air out of my soap mixture and this isn't a problem with my loaf molds. The last soap I made I banged on for an hour with a rubber mallet. Didn't seem to make any difference at all. Does anyone have any suggestions?

Desperate to see some improvement in my round soaps!
 

shunt2011

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I would pour at a thinner trace and that should help. If it's too thick you trap more air. Pipe has a smaller surface than a log does so harder to bang it out.
 
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