Quote:
Originally Posted by Aquaticedge
Ok, I did a cast with modeling clay and I'm noooot really happy with how it came out. they shrunk more then I thought they would. on a happier note. I have the plates here with me. Soooooo. I want to do a plaster cast. How can I make sure when the plaster dries I can release the metal without breaking said plaster? can I spray something on the plates like whites grease or cooking spray?
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It's a shame the modeling clay didn't work. In art school we used a thin layer of latex to stop Plaster of Paris from sticking to stuff.
I still don't really understand why you're making castings though 'cos you know that once you make a mold and then cast metal in it the metal reproduction will come out smaller.
If you want an exact match then I'd be doing some sort of tracing - grave stone rubbing / digital photo and then copy with a CAD program... ???