fiberglass question

[RickB]

I need some kind of mold release agent, PVA would do nicely but I'm having trouble finding any I can go and buy today.
I can order from an online place, but that's not going to get the job done today.

I have a plaster cast mold I want to lay in some fiberglass and resin and then be able to pop it out without breaking the mold. In a previous job I had doing this kind of thing we would use special chemicals and everything worked great.
Now I want to do a little of this at home in my spare time.
Anyone think of a substitute or some other way of doing this?

For the casting painted piece that I was putting into the plaster to create the mold I rubbed the surface all over with wax from a candle. It popped right out perfectly.
I'm considering giving the mold the same treatment, then laying in the fiberglass and resin and then just hope it comes out cleanly.

Any other ideas?

 

[JPSmit]

plastic wrap?

 

[RickB]

Not a bad thought, I'm also considering duct tape and spray cooking oil like 'Pam'.

Whatever I use it needs to be today.

 

[JPSmit]

just googled and looks like paste wax is what you need

 

[RickB]

Thanks, I have some!

 

[Bayless]

Heavy coat of paste wax should do nicely.