If you have or can make room in the freezer and it's handy, you can speed up the cooling process by popping the mold into the freezer after a pour. The best way to do it is to be working multiple molds of the same or different designs, so that by the type your done pouring the circuit, the 1st ones are ready to be pulled. They look good though and the stripers won't care they are slightly distorted.
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