COBRA Posted January 24, 2007 Report Share Posted January 24, 2007 i know i have read it on here before but that was a long time ago. what is the best coating for sculpey after you have baked it? i already baked my designs and now want to coat them to cast them in resin. i never ever used sculpey before, wow what i was missing! that stuff molds so easy, i carve my design 90% then bake it, and sand and mold to finish. unreal product! i do all my mold work with it on a flat piece of inch+ thick polished granite. i can carve and sand and it doesnt hurt the surface, the designs stay put, it all goes right in the oven and out, fantastic surface to deal with. also how long is the drying time of whatever is said to be used on the sculpey? i want a real nice high gloss finish. on all my plaster work i always sprayed shelac. more questions what are people using for mold release? i normally use pam or vaseline. any other resin option out there also? i use fiberglass resin and its ok, i like the resin molds and they come out nice if you cast them in wax before hand, but the candle wax melts under the heat of the curing resin. there has to be a higher heat synthetic wax for casting or prototype metal parts but i dont know where to get any. silicone molds are ok to and great for detail, but i burn them out from so many pours. i have all my molds going in aluminum later this year but am just trying to get a handle for now, since all my silicone molds are way worn and i redeisgned all of my baits. thanks! cobra Quote Link to comment Share on other sites More sharing options...
COBRA Posted January 25, 2007 Author Report Share Posted January 25, 2007 bump Quote Link to comment Share on other sites More sharing options...
Smallie Posted January 26, 2007 Report Share Posted January 26, 2007 I coat my Sculpey masters with Devcon. Works for plaster molds, don't do resin so I can't speak from experience. I would expect it to work fine though. Dave Quote Link to comment Share on other sites More sharing options...
redg8r Posted January 26, 2007 Report Share Posted January 26, 2007 Yep, epoxy surely works, Ive used shellac, clear acrylic, polyurethane. Sculpey makes a clear glaze that goes on & bakes to cure, but from the looks of it, it isnt very viscous & might impede the detail. for the glossiest coat, diluted 5min epoxy is the cats ass & would stand up to any solvent based mold release you choose. More importantly you need a good mold release, Ive heard of people using paste wax, diluted in a little mineral spirits, vaseline diluted the same. professional releases made for releasing from polyester is a sure bet. After the polyester mold sets up, the heat will soften the master. if you dont mind destroying the master, thats the best time to remove it, if not make sure the mold fully cools first. You doing a 1 part mold correct? Quote Link to comment Share on other sites More sharing options...
COBRA Posted January 26, 2007 Author Report Share Posted January 26, 2007 correct 1 part, i just have never used this sculpey and the devcon is what i was thinking of but couldnt think of the name. i did a search on here and i ended up tryin some urethane. its 'fast drying', yah right, i will add another coat today, then do a silicone mold, make another master, then my resin mold. thanks guys! Quote Link to comment Share on other sites More sharing options...
nova Posted January 26, 2007 Report Share Posted January 26, 2007 I use sculpy clay and other things as well for masters. Sometimes I'll make a master that has rounded sides or protruding eyes(see the contest) and you won't be able to get those out of a 1 piece pop mold. For this I won't "fire" the sculpy I just pick it out after the pop has set. www.novalures.com Quote Link to comment Share on other sites More sharing options...
