Looking for suggestions on which type of resins and silicones are safe to use on foam. I’m currently working on a foam pack to use as my buck. I intend to coat it with epoxy resin to give it a smooth and durable finish before making a mold of it with silicone. I’ll probably then coat the silicone with fiberglass to keep its shape when casting shells. I appreciate any advice on the process. I believe I’ll be using blue insulation foam for the most part. Thanks.
You might have a look at my molding and casting thread: http://www.gbfans.com/community/viewtopic.php?f=2&t=33899
Hey everyone. I am currently making a buck out of blue insulation foam. I was wondering what would be the best way to give it a perfect finish before casting. I was going to use apoxy resin. Please let me know if there is a better way of doing this. Thanks.
As you already had one topic asking for assistance/info with resin casting, there was no need to create a second. Both topics have now been merged.
I would recommend a low viscosity epoxy resin like Bob Smith Industries 20 min 2 part epoxy resin. I have built two brand new pack shells made with foam core and I coated each shell with about 2-3 thin coats of BSI epoxy resin and sanded it all smooth. The results are quite amazing. Its easy to sand when it is completely cured, can be applied with a paint brush, has very low odor, and is easy to mix. I would recommend purchasing a small digital household food scale to make measuring out the resin and hardener much easier though. The BSI epoxy resin is usually available at most hobby stores or on amazon.com.
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Thanks for the advice and sorry about double posting. I thought the first post didn’t go through. I’m going to try the recommended resin and get a super clean buck before figuring out casting. My days of MDF packs is finally over lol. Thanks again.