Lately I have been having trouble with bowls warping. I think I might have a clue why but I am up for suggestions and if I am correct would be nice to have it confirmed. After throwing I cut them off the bat, leave sit for a few hours to set up then I re-cut them and flip them over.. very careful not to push in on the sides. Several hours later they are ready to trim and when I look at them they are warped. The only thing I can think of is they are drying to fast. I have noticed since late fall the air seems dryer and everything is drying quicker... doesnt really make sense to me why drying faster they would warp but its the only thing I can come up with... any suggestion would be helpful.
I am using a stoneware clay.. everything is drying so quick that if I throw bowls in the morning they are trimmed and done by evening.
All of the other information in the other posts is very relevant to your problem. I would definitely turn the bowl over by using another bat on it. I have also found a little trick that seems to help when moving and drying a wet bowl. I take a square of thin paper and place it evenly over the rim, smooth down lightly and then move the bowl. I often throw bowls on the wheel head, and remove them as thrown, as I am often throwing off of the hump around 20#. This trick will allow me to move the larger thinner bowls without warping them. This also helps the bowl to dry a little more evenly.
I just want to make sure I understand you correctly.. throwing from the hump, before you remove the bowl from the hump you put a piece of paper on the top, smooth it down slightly to the rim then remove and it keeps it round while you are moving it? If so I HAVE to try that! If I have that right, are you then sitting a bat on top of it and leaving it sit upside down?
I have had a Bailey now for just over a year and so far it has worked flawlessly and I couldnt be more impressed at how sturdy it is and I absolutely love the big splash pan. I bought the shelf for the back and I keep my bucket of water and all my tools on it.. little bit of a stretch to the bucket but I am glad I got the shelf.