When casting resin or silicone, sometimes the master model and the silicone can stick, resulting into problems releasing the original (even breaking it).

To avoid this, you can use a release agent. This stuff comes in spray cans and costs around 10$ (and you never need a whole can, not in a lifetime !).

An alternative can be liquid hand soap. Soap, thinned with a little water (about half or less water) does the trick.



Be sure you don't smear it too thickly, or it will influence the cast surface.

Best is to add a thin coating, dry with hairdryer, apply another coating...

It can also be used to separate molds into two (or more ) components.

Here's a tip : never try this on a master you spent a whole week's work on ! Try it on something else first, so you get the hang of it...

... or use another product : try the lubricating jelly that is sold as a sexual aid. It is specially formulated not to harm rubber ! The product is cheaper than "real" release agent and it lasts a lifetime, too (if you only use it for making molds !).

Jan

Good old KY lube hey. Never thought of that.
thanks there General
Cheers

I've found that the best budget release agent is a trip to the hobby shop after they have had a shipment of new kits. Nothing releases my budget faster.
Sorry, I just couldn't help myself. :-) Mainly cause it's true.
Chuck

How about a can of 'Pam' from the grocery store?

Tread.

How about a can of 'Pam' from the grocery store?

Tread.

Like Treadhead said.. PAM It works pretty good.

What is PAM ?
Jan

Cooking spray, non-stick

A non-stick cooking spray, I use 10w40 to cook with myself.

No, WHO is Pam. Pam was a barrel racer I used to date after I got back.....no, just joshing.


Tread

LOL ! Cooking Spray ! What a truly American invention ! :-)

Whats wrong with butter ? Olive oil ... ? Then again, the 10w40 solution sounds like an attractive idea cooking too... Thàt must be the strange flavor of our burgers when I was in the army !

I'm not sure oils are a good solution to separate silicone molds or to prevent your master model from sticking to the mold. I'd be careful they might
- chemically interfere with the silicone curing process (= bad molds)
- stick to the casts (painting problems)
... but it might work !
For some reason, I prefer the KY jelly alternative...

Hey
Thanks for the tip on pam I"ll try it on my mud casting and report back.



Ponysoldier.

pva is also good have not used it but is recommended by people that make resin and rubber. Alumilite and dow corning

I hope this link works but this is where I get my info



http://www.dowcorning.com/FAQ/faq_search.asp?DCWS=Moldmaking&DCWSS=&ind=013&2ndlevel=" TARGET="_blank"> http://www.dowcorning.com/FAQ/faq_search.asp?DCWS=Moldmaking&DCWSS=&ind=013&2ndlevel=