rhallman Posted February 26, 2016 Report Share Posted February 26, 2016 I've been making some hard swimbaits and am trying to move into making large soft plastic swimbaits. I am new to plastic pouring. Made a prototype, poured the RTV mold with the opening/sprue on top in front of the dorsal fin. This is a hand pour. I have had plenty of issues dealing with air bubbles and shrinkage. I think I have solved the air bubble issue, but shrinkage in the mold is deforming the bait. I am standing by to make sure it is topped off as it shrinks. I am pouring very slowly. I have tried every way under the sun between pour speed, heat, plastic hardness/softness, wait time before removing from the mold and cannot figure it out. I want to take the leap to an injector, but doubt that will help. Please take a look at the picture to see how it is deforming. Anybody have any experience and insight into why this is happening and how to stop? Many thanks. 1 Quote Link to comment Share on other sites More sharing options...
Walking Dead Posted February 26, 2016 Report Share Posted February 26, 2016 Let's see the mold. Venting issue, air trapped, too hot. How did you vent the mold? Try a spruce extender? Quote Link to comment Share on other sites More sharing options...
MonteSS Posted February 26, 2016 Report Share Posted February 26, 2016 With that big a bait, gate is cooling sooner then body. 1 Quote Link to comment Share on other sites More sharing options...
mark poulson Posted February 27, 2016 Report Share Posted February 27, 2016 That is a beautiful bait! Quote Link to comment Share on other sites More sharing options...
