RAVEN Posted March 19, 2017 Report Share Posted March 19, 2017 (edited) I am done making molds out of plaster paris. I would like to learn how to make them out of blue soft rubber. I would also like 2 part molds. I see youtube, but I don't seem to find any sight to make molds from scratch. Can anyone help me. Edited March 19, 2017 by RAVEN Quote Link to comment Share on other sites More sharing options...
JRammit Posted March 19, 2017 Report Share Posted March 19, 2017 The blue rubber you see is RTV silicone... It's pricy compared to POP, but much nicer to work with! There are 2 basic ways to go about making a 2 piece mold with RTV..... One is to imbed your master into a bed of clay, pour the first layer of RTV, remove the clay then pour the second layer....... The other way is to use POP in place of the clay... Start out just as you would making a POP mold, but pour the second layer with RTV instead of POP... Then remove the hardened POP and pour the second half of RTV (tip: make the POP layer thin enough to break apart, easier to remove this way) Don't forget a release agent if you're making 2 piece molds... Silicone will bond to itself There are a few other ways to make silicone molds, but they are design specific Quote Link to comment Share on other sites More sharing options...
Roger Linnell Posted March 20, 2017 Report Share Posted March 20, 2017 Can WD 40 be used for silicone to silicone release agent? Quote Link to comment Share on other sites More sharing options...
rixon529 Posted March 20, 2017 Report Share Posted March 20, 2017 Here's a link to a silicone manufacturer's site and tutorials: https://www.smooth-on.com/tutorials/ Lots of videos and info. Rick Quote Link to comment Share on other sites More sharing options...
ipt Posted March 22, 2017 Report Share Posted March 22, 2017 why are you done with POP? super cheap and easy to work with. put the right finish on it and you have top quality baits. 1 Quote Link to comment Share on other sites More sharing options...
