Hey there saw this post from the op and i just made some two part molds with the same silicone and having the same issue. I am making big jigs though for vertical jigging and i havent found out what is the solution. The baby/talc helps but didnt solve it as well as made a vent and widened vent as well as made a giant sprue which ruined the mold but tested to see if the flow was restricted. Still getting voids mainly on the two ends and incomplete areas. Is there any mold making materials even silicone that are real superior for making big objects/lures besides going to a metal shop guy to make one? Trying to get this right but cannot settle with powder coating to fill in a crappy finished jig. Help would be much appreciated. Thank you!!!
