Prolific maker and product designer [Eric Strebel] has years of experience making reusable mold boxes for silicone and resin casting. He’s always used 3/4″ plywood before, but it comes with ...

Our favorite tip has to do with the way [Eric] makes this a reusable two-part ... [Eric] uses sprues made out of resin rods that were cast inside of drinking straw molds. These he chamfers against ...