Hi Mark.

I have never herd of any body doing this. I would imagine that any chisel that has been tempered or one with a laminated and hardened back is not going to like being stretched out in that manner. I flatten the back of my chisels on a rough diamond plate they are expensive but they cut quickly.
Nice anvil.

kfhines

"When dictatorship is a fact, revolution becomes a right."
Victor Hugo