Jig Man Posted May 11, 2022 Report Share Posted May 11, 2022 Cadman put me on to this several years ago. This stuff is great. I have cleaned and recoated several molds. However, I have a mold that I modified with high temp silicone and had to redo some of the cavities. In this process some of the drop out got removed. My question is: should I cover all of the silicone before spraying or just spray over it. Quote Link to comment Share on other sites More sharing options...
cadman Posted May 11, 2022 Report Share Posted May 11, 2022 Well that is a good question, I've never thought of that. My first impulse would be to spray over everything, because I don't think the drop out will stick to the silicone thus leaving it wet. With that said, the wet drop-out will probably be messy but you can probably wipe it off the silicone. However if it were me, I would probably tape off the silicone. I am curious though if what I said above would be true. Can you try a sample and give us feedback? Very much appreciated. Quote Link to comment Share on other sites More sharing options...
Jig Man Posted May 11, 2022 Author Report Share Posted May 11, 2022 (edited) Ted I have a silicone mold just laying around. I sprayed it and the dropout stuck to it and won’t wipe off so I guess I’ll do some taping before spraying. Edited May 11, 2022 by Jig Man Quote Link to comment Share on other sites More sharing options...
Munkin Posted May 12, 2022 Report Share Posted May 12, 2022 I use this stuff on my spincast machine as well as handpour molds. Lead likes to stick in the funnel area of the metal locking plate and this prevents it. Allen Quote Link to comment Share on other sites More sharing options...
Jig Man Posted May 12, 2022 Author Report Share Posted May 12, 2022 I got the mold taped up and sprayed this morning. I’ll let it dry while I go fishing. 1 Quote Link to comment Share on other sites More sharing options...
Jig Man Posted May 12, 2022 Author Report Share Posted May 12, 2022 Taping was a pain but worth it I guess. 1 Quote Link to comment Share on other sites More sharing options...
cadman Posted May 12, 2022 Report Share Posted May 12, 2022 Well thanks for the update. Definitely some good info. I would have never thought that Drop-Out would stick to red RTV. I'm just really surprised. Quote Link to comment Share on other sites More sharing options...
Jig Man Posted May 13, 2022 Author Report Share Posted May 13, 2022 (edited) I checked it this morning to see if it would flake off the silicone, no. I used aQtip and acetone to clean part of it. Next time I think I will just spray then clean up with acetone. It will be a lot simpler. Edited May 13, 2022 by Jig Man Quote Link to comment Share on other sites More sharing options...
Apdriver Posted May 13, 2022 Report Share Posted May 13, 2022 What’s the problem having drop out on the silicone? Quote Link to comment Share on other sites More sharing options...
Jig Man Posted May 13, 2022 Author Report Share Posted May 13, 2022 I don’t know that there is one. The only problem I could see is maybe stiffen the silicone and create flash which lead to the silicone in the first place. I don’t want to go down that road again. Quote Link to comment Share on other sites More sharing options...
mark poulson Posted May 13, 2022 Report Share Posted May 13, 2022 I'm with Apdriver. Why not give it a shot. If it doesn't work, you can just remelt the lead and try again. Quote Link to comment Share on other sites More sharing options...
Jig Man Posted May 13, 2022 Author Report Share Posted May 13, 2022 That can be someone else’s decision. Mine is finished. 2 Quote Link to comment Share on other sites More sharing options...
