Post #686126 by MadDogMike on Tue, Jul 16, 2013 5:10 PM

You are right Jurka. If you leave the casting in the mold too long it shrinks too much and breaks when you pull the mold off. The key is to pull it from the mold when it is just firm enough to stand on it's own. I let mine sit for about 8-12 hours before removing them from the mold, not a couple of days.

As far as the "foot" or indented rim at the bottom. When you remove the casting from the mold and it's still somewhat soft, you can carefully indent the bottom by pressing on the bottom with your thumbs. Here is a simple 2 piece mold I made a few years back. It had a flat bottom when cast and I pressed it in.

Jurka you are really struggling with this. I feel bad that I am 6,000 miles away and not able to be of much help. You might want to see if there is someone locally who is doing slip casting. Maybe a university nearby? I was able to see someone casting when I first started out and it really helped