by abarlow » Tue Feb 11, 2014 11:45 pm
I started drying mine last night. It cracked a lot in the feed tube area where some chunks of the inner wall were falling off. I used plywood as the inner mold. Should have used backer board. It didn't dry out a ton after about 3 hours of burning.
I might have used too much perlite. But i just kept running out of fireclay. I used nearly 3 bags of fireclay with the 6 inch insert in the standard 16x16x32 sized box.
I also found that it mixes very different if you add the ingredients in different orders! Fireclay +water then perlite is much different than water +perlite then fireclay....