This was one of those times where I should have read all the instructions before beginning… My actual mould making I think was pretty good initially but I had a bit of trouble getting the consistency of the plaster right.
My first try… Crumbly and full of holes. Too much plaster to water.
My next try (which I didn’t bother photographing) was really soft, and had lots of water floating on the top of the plaster after an hour. I figured too much water this time. I did realise I wasn’t mixing the plaster for long enough, found some very precise instructions online and followed them very carefully. And finally got a decent mould! I had to switch containers for the 2nd half, as I hadn’t realised my bucket had a slight flare at the top which meant the first half couldn’t sit back inside it.
Needs a bit of a clean up still, but I’m just pleased these ones actually set properly.
Devon Smith Ceramics 