Make sure there are no holes in the sheet!
Well that is just uncalled for....I haven't had a crack like that in years(mixer clay, by the way...just sayin.)
I have my 2 beginning ceramics classes on Tue/Thur so I don't get too much work done on those days. I did get these mugs made. I have about 60 of those 8" plastibats and I usually throw mugs on those and leave them until they stiffen up a bit so I don't ruin any gesture lines while lifting them off. I decided to slum it today and it turns out I've just been wasting ware board space with those bats all these years.