I am new to pouring molds and I have been having a few issues. I am pouring low fire slip into plaster molds and some of my pieces have tiny pin holes in them. Is there any way to prevent this? I'm assuming I can patch these by maybe brushing some slip on them once they are a little firmer in the greenware stage is this right?
Also, Its been raining here and these things are taking forever to dry so I can unmold them. I have heard that leaving them too long in the mold can crack it, so in fear I have been pulling them out too early and they literally mush and collapse. Is there a good way to tell when you can un mold them? Can I reuse these botched pieces of un dried slip for anything?
Some of my pieces are large and have literally sat all night and are still soft.
Thanks in advance!