porkmeatballs Posted November 30, 2016 Report Share Posted November 30, 2016 I was wondering what that grey stuff is that some lure makers put on their baits before molding them. Does it help smooth out small blemishes or something? Exactly what is it? Primer? Quote Link to comment Share on other sites More sharing options...
Vodkaman Posted November 30, 2016 Report Share Posted November 30, 2016 You are probably referring to a mold release agent. This is a thin coating that will prevent the master from binding to the molding material. There are various types of mold release agent. My favorite is floor wax, another popular is Vaseline. I have even used a thin spray of olive oil when working with silicone molds, to release resin. Dave Quote Link to comment Share on other sites More sharing options...
buzfly Posted November 30, 2016 Report Share Posted November 30, 2016 (edited) If you are pooring them it may be primer. You can spare primer in your mold and then poor the resin. When you demold it the primer will be bonded to the resin and will not come off. Just use a primer that is compatible with your paint system. PS you can also dust your molds with alumalite dust. Edited November 30, 2016 by buzfly Quote Link to comment Share on other sites More sharing options...
porkmeatballs Posted December 1, 2016 Author Report Share Posted December 1, 2016 Dave, so the mold release just helps the master come out of the mold better? It doesn't cover up blemishes? Quote Link to comment Share on other sites More sharing options...
porkmeatballs Posted December 1, 2016 Author Report Share Posted December 1, 2016 Btw I saw mikey of 3:16 lures do this on his master baits. Look on his instagram... Quote Link to comment Share on other sites More sharing options...
jigginpig Posted December 2, 2016 Report Share Posted December 2, 2016 Prolly just a flat or eggshell primer. Good surface prep is 90% of it, for damn near any process. 1 Quote Link to comment Share on other sites More sharing options...
Travis Posted December 2, 2016 Report Share Posted December 2, 2016 (edited) 18 hours ago, porkmeatballs said: Dave, so the mold release just helps the master come out of the mold better? It doesn't cover up blemishes? Correct the primary job is help the master come out of the mold better. Depending on the complexity of the mold the more concerned you have to be with mold release. It will cover up blemishes (minor) but it can also add blemishes to your master. For example you can transfer over detail to the mold if you don't apply the product correctly. I have a mold I made that my finger print can be partially observed in the RTV because I got a little sloppy. I typically will seal my master well with a clear coat (usually shellac) then use Mann Ease realease 200 series or Johnson's paste wax when I make my molds. Paste wax works well and is fairly fool proof. Coat with wax let dry then buff excess off. I have used spray paint also (gloss) but have had it react a few times and made the mold have sort of an orange peel finish (paint was smooth before molding). I think it was more of a fluke but switched from using. In the picture below, probably a lure from well over 12 years ago based on the use of those hideous lips, you can see the orange peel look of the finished bait. Flat colored baits not as bad but pearl and more noticeable as catches light differently. Edited December 2, 2016 by Travis 2 Quote Link to comment Share on other sites More sharing options...
porkmeatballs Posted December 2, 2016 Author Report Share Posted December 2, 2016 Sounds good! Instead of shellac, would either clear nail polish or minwax spar urethane work? I already have the minwax, so i was wondering if i could just use that instead. Quote Link to comment Share on other sites More sharing options...
Travis Posted December 3, 2016 Report Share Posted December 3, 2016 Both should work however fingernail polish if not quick can get tricky and leave ridges and thicker areas. One of those things need to get it done. Spare urethane should work fine. I don't recall if I ever used it or not. Quote Link to comment Share on other sites More sharing options...
porkmeatballs Posted December 3, 2016 Author Report Share Posted December 3, 2016 Ok Im just worried if it will react badly with the silicone mold 1 Quote Link to comment Share on other sites More sharing options...
mark poulson Posted December 5, 2016 Report Share Posted December 5, 2016 On 12/3/2016 at 9:25 AM, porkmeatballs said: Ok Im just worried if it will react badly with the silicone mold Call the mold manuf. and ask them. Quote Link to comment Share on other sites More sharing options...
