Using JB Weld to Customize a Jig Mold

[MagikSmallie]

I made a mold with JB weld.... well modified one and the lead doesn't stick to the JB weld because after cured the temperature capabilities of the JB weld far exceed the temp of molten lead! Just be sure to a candle and put some carbon on the mold and go for it. I also use wax to "flux" my lead to remove impurities.

Mold away your safe

What does putting carbon in the mold do? Ive heard of this before but not sure what the purpose is?

[UpaCrick]

The carbon soot acts as a releasing agent.

Glenn

[dissel]

what kind of jigs are you trying to make?