Originally Posted by wilkinsonk
You can also use a leather sand bag to the same effect in case you don't have a place to store your very own forming stump. You can add or subtract sand based on how much dish you want. An upside is that unlike the wood the leather will not impart its imperfections into the metal.
Here's an example, but if you're handy you could make your own.
Very good info! Thanks, Ken.
I knew about the leather bags, but never thought about the imperfections part. I like it when people chime in and we all learn something along the way.