fisheye56 Posted November 18, 2014 Report Share Posted November 18, 2014 I purchased some rtv at a local hobby store mixed according to instructions and poured over master molds! After cure time and removing. My baits come out dull? Never had this problem before with rtv? A chemical reaction must be happening? Any ideas what to do? Any coatings or acetone cleaning? Am at a loss and 15.00 down the drain? Help please? Quote Link to comment Share on other sites More sharing options...
mark poulson Posted November 18, 2014 Report Share Posted November 18, 2014 It would help if you told us what brand and which specific RTV you used. Quote Link to comment Share on other sites More sharing options...
fisheye56 Posted November 18, 2014 Author Report Share Posted November 18, 2014 Alumnite amazing rubber. The pink one Quote Link to comment Share on other sites More sharing options...
Long Lake Lures Posted November 18, 2014 Report Share Posted November 18, 2014 It may seem like a dumb question, but are your masters shiney? Quote Link to comment Share on other sites More sharing options...
fisheye56 Posted November 19, 2014 Author Report Share Posted November 19, 2014 My masters were the shapes I had poured from the original single . They were plastic so shiny they were. I think I may have discovered the reason. The product, they offer different hardnesses in their line of RTV's . Still if I can find a product I could coat the walls I could save the mold? Quote Link to comment Share on other sites More sharing options...
Big Pancho Posted December 11, 2014 Report Share Posted December 11, 2014 I have been playing around with many different silicones. What type did you get? I have had issues with platnum based silicones. Get the tined based stuff. It is much more forgiving. What I have been doing with my master copies is to spray them with automotive primer followed up with automotive paint. The smoother the outter surface of your copies will make a huge difference on how the molds will turn out. Once you pour into the glossy molds cavaties your baits will come out with a very nice sheen. As for your mold and having your baits come out dull. Try spraying the mold with silicone spray prior to pouring your baits. The silicone spray will leave a nice slick of oil on the inside of the mold and your finished pours will come out with a nicer sheen. I hope this helps. Pancho Quote Link to comment Share on other sites More sharing options...
