Are the four holes around each base the drainage holes? This seems like a really efficient way to mold instead of having one gigantic block of silicone for one keycap.
Did you cure the silicone in a pressure pot as well? Or just pour method?
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Correct, those four holes around each cap are vents that help eliminate larger bubbles. Def nice to be able to do multiples at once - allows for faster experiments on colors and technique. Additionally, I don't feel so bad if one of them gets F***ed up because I have four more good ones
Each pour is both de-gassed in a vacuum chamber and pressure cast @ 40psi.
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You've been incredibly helpful, thank you. Last question...how are you actually getting the resin in the mold? Do the small holes play a role? Some type of injection? Your molds are different (in a good way) from a lot of other molds I've seen, so I'm just trying to wrap my head around it. Thanks again!