Ok now, remember I'm just a newbie at all this so don't rake me over the coals too bad. I found a youtube video where a guy made a box kiln and it dried his large bowls in about 24 hrs. So my 2 bowls were already predicted to warp and crack on me, so I thought, what the heck. I thought maybe I can dry them a little faster and slow down some warping and/or cracking. I built the box kiln and put both bowls in it. They set all night, probably a total of 15 hrs when I pulled them out. Well both bowls did warp, no noticeable cracks that weren't already in them. But at entry last night, my smaller bowl moisture content was over 14% and the more parabolic bowl was over 16%. When I opened the box today, the small one measure 4.6% and the other was 6.2%. So do you think they dried too fast and this is not a good idea or were they destined for death either way? Btw, here are a couple pics of the box kiln. As you can see on the side is a shop light taped to the side. Under that is a 4" fan that I cut a hole in the box for it sit in the side. The opposite end has a small vent hole for air escape. It was in the 50's this morning in my shop but I could feel nice warm air from the box vent.