raildogg Posted May 29, 2017 Share Posted May 29, 2017 I might have missed this but, has anyone tried to use Flex Seal as mold compound. In the adds I see all over television the shill puts it in a cake pan and it comes out solid piece of rubber. I wonder what you'd use as a release agent. Quote Link to comment Share on other sites More sharing options...
Modelbuilder Mark Posted May 29, 2017 Share Posted May 29, 2017 I wondered the same thing, but have been hesitant to buy some just to find out Quote Link to comment Share on other sites More sharing options...
Eshaver Posted May 29, 2017 Share Posted May 29, 2017 A MOST INTERESTING thought ........... Quote Link to comment Share on other sites More sharing options...
Alix Bernard Posted May 29, 2017 Share Posted May 29, 2017 I've always used baby powder as mold release. C'mon try it!!!!! Quote Link to comment Share on other sites More sharing options...
935k3 Posted May 29, 2017 Share Posted May 29, 2017 I doubt it is much different than plasti dip seen below. It will go bad very quickly before you use it all. I would not waste the money on it. Quote Link to comment Share on other sites More sharing options...
peteski Posted May 29, 2017 Share Posted May 29, 2017 It won't work very well. It is a solvent-based rubber material which will shrink as it dries (hardens). Unless the mold is very thin, the drying process will be very long and the shrinkage will be very noticeable. RTV rubber mold material hardens by a chemical reaction (not solvent evaporation), so there is no appreciable shrinkage and it will set in thick layers. Quote Link to comment Share on other sites More sharing options...
Eshaver Posted May 29, 2017 Share Posted May 29, 2017 Thank you for sharing that Peter ! Quote Link to comment Share on other sites More sharing options...
raildogg Posted May 31, 2017 Author Share Posted May 31, 2017 Yep, I just got an email from the Flex Seal Co. They said they have not tested it for mold making.But I know you guys are right about it not working. Quote Link to comment Share on other sites More sharing options...
Mike Chernecki Posted May 31, 2017 Share Posted May 31, 2017 If it is anything like Plasti Dip, it will dissolve any plastic it comes in contact with. Quote Link to comment Share on other sites More sharing options...
Art Anderson Posted May 31, 2017 Share Posted May 31, 2017 If it is anything like Plasti Dip, it will dissolve any plastic it comes in contact with.Here's a link to Flex Seal's MSDS (Manufacturer's Safety Data Sheet). Note that its solvents are petroleum distillates--which generally are death to polystyrene plastic. http://www.mcoe.us/view/1668.pdfArt Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.