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- Thu May 02, 2013 12:53 pm
- Forum: Kiln Casting
- Topic: Sand Mold Basics
- Replies: 31
- Views: 54239
Re: Sand Mold Basics
I'm joining this thread kind of late but I have a question and I'm hoping one of you might know the answer. I have been told by multiple knowledge glass casters (Norman Courtney is one - he works Bertil Vallien quite often and was my teacher at Pilchuck) that I need a mix of 120 and 180 Olivine for ...