Yes, I was confused, I thought you were talking about adding the powdered graphite to the plaster that makes up the mold, not applying it to the surface of the mold prior to casting. we always just used a candle. Does the powdered graphite evenly stick to the mold surface? I never thought of powdered graphite for casting, always just thought of it as a dry lubricant for locks.
The dry casting lube costs around $12.00 an oz. all it is,
Is fine powdered graphite with a high dollar name.
It just takes a small amount to coat, The plaster will look dirty Gray not black
I only use it if i am doing a button with alot of detail or pouring more than 50 buttons
from the same plaster mold