epoxy casting trouble

[lklaussen]

Well looks like I have a question for JSR.. but anyways what is the best way to release epoxy from the mold for making a vortex block?

[jrrdw]

I'm guessing...Powder the mold, silicon spray maybe.

[Gun Freak]

You have to lubricate the mould before pouring so it can slide out.

[lklaussen]

What lubrication works? I tried cooking spray, couldn't get it out yesterday.

[Gun Freak]

Vaseline might do the trick...

[dewey-1]

Well looks like I have a question for JSR.. but anyways what is the best way to release epoxy from the mold for making a vortex block?

It would help to know what the mold is made of?

There are actual mold release compounds.

[Technician1002]

Most mold release compounds are wax based. I've seen car wax, candle wax, and ski wax used as inexpensive alternatives.

[Hawkeye]

Meguiar's car wax is more or less the same as their mold release wax. Multiple coats polished to a gloss will let epoxy pop out of a mold with a little encouragement.

[dewey-1]

Most mold release compounds are wax based. I've seen car wax, candle wax, and ski wax used as inexpensive alternatives.

All the encapsulation or potting compounds that I had used on molds typically worked the best with a mold release that contained some PTFE.

Similar to this;
http://www.kpg-industrial.com/products/ ... d_release/

This was of course in a production environment where quality of the product was a major concern. The molds were typically made out of materials like nylon, delrin or polyethylene.