Okay, here is a photo of the Stubai chisels that my mom sent me--that she paid $1 for at the 2nd-hand store she volunteers at.
You can see that a few of the edges are nibbled away, some edges are definitely not square, and one chisel is bent.
Questions: For the ones that are nibbled and those that are not square, does this need to be fixed on a grinder before sharpening them?
What about the bent one. Can it be straightened?