I want to create a mold for a 3.5 inch Frozen Charlotte doll and I know that the yellow mold putty has a longer curing time. I was wondering that if I put both putty containers in the refrigerator to make them cold if that could slow down the curing process for me to have longer to blend the putty. Thanks!
Post by carol - Alumilite Corp on Aug 19, 2015 10:04:41 GMT -5
Ultimately it would be a test for you, but I can give you some information to make your determination whether to attempt it or not. Heat will accelerate the cure of platinum cure silicones, so it would seem like cold/chilled would increase the open time. Odds are it will but it could be minimal (maybe another 45-60 seconds) if it does. It is possible that it may not be as pliable when it is chilled.
The other option is the Mold Putty 15, it was formulated for those who need longer open times or for larger projects/applications ... it works great! You have a 15 minute open time, there is a 1-2 hour cure time. It is a higher durometer (more firm) than the Amazing Mold Putty, which is typically wanted for larger applications for mold stability. As with the Amazing Mold Putty it is FDA compliant when mixed and used properly for making food molds.
So will the yellow molding putty harden by it's self? Are there something I could put on my original object to keep putting from sticking to it or tareing when times up on it\cured like pam nonsticking cooking spray?
Once you mix Side A with Side B, it should harden up after the open time is over. Silicone only sticks to silicone so a release agent is not needed unless you don't want to bond two pieces of silicone. But yes cooking spray can be used as a release agent if you want to.