Mold Making - Mass Casting Complex Parts (with a parting line)

video Mold Making - Mass Casting Complex Parts (with a parting line)

When mass casting a part without a flat side, you must create a two-part mold. We create a two-part silicone rubber mold with a clean parting line and then cast the part with Repro.

To see other mold making videos see http://www.freemansupply.com/moldmaking.htm

masterchrisx3 says: Jul 21, 2009. 10:07 PM

can you cast aluminum in these molds

Cpt. Caleb says: Nov 8, 2009. 9:17 AM

I think you're supposed to pour plaster to make metal castings, this plastic might melt. but you should be able to use same process, just swap out the polymer with plaster

Cartmanpimp says: Apr 12, 2009. 9:22 PM

Can you make a mold of a whole tree of a model?

Renagade says: Mar 15, 2009. 9:00 PM

Very cool. I have a question though, can you pour liquid plastic into these molds and harden the same way?

Myself says: Jan 5, 2008. 8:50 AM

Nice clear overview of the moldmaking and casting process! I'd like to see it with an even more complex shape, one that didn't lend itself easily to the wood baseplate method. Also, I can't be the only one who heard "spray-on vaseilne" and immediately started thinking up prank uses for that stuff. To be in high school again!

Ward_Nox says: Apr 19, 2008. 9:10 PM

well now your not

valkiraun says: Apr 2, 2008. 10:25 PM

the plywood base could be replaced withclay, which is malleable and secure. Great instructable. 5*

liquidflorian says: Dec 29, 2007. 3:16 PM

Every time I've tried to order products from this company I get nothing but silence.

TangMu says: Dec 26, 2007. 4:15 PM

using plasticine instead of milled wood also kinda works for the parting line. just poke dimples in it for the locking mechanism. More ghetto but less time consuming. I love that fact you are wearing lab coats in all of this. It reeks of SCIENCE!!