I've spent the last 3 days looking for 50 lbs of oil-based, nonsulfur clay. This is turning into a chore. I can find it in many different colors but only in 1 and 4.5 lbs packages. And at $14/4.5 lbs I would be looking at more than $150 just for the clay.

Man, making molds is EXPENSIVE!

The search continues.