I inherited some chisels. They are basically in good nick save for the fact that they have been poorly stored and were missing large chunks of edge. The grinders at work have wonky wheels from metal bashing heathens sharpening welding rods as scribes. I have never been caught committing such acts of blasphemy. Anyhow, I put them on my belt sander. They now have no chips. They are also far enough from square that some look like skew chisels, with one exception they are not. One has a * handle, the lack of squareness suggests it is the sander platen that is out, although I will accept accusations of lack of skill/practice/eyesight with good grace.
I have access to a wonky belt sander, a kippered bench grinder and an angle grinder, how should I square them up for proper sharpening? The good news is that I've not cooked out their temper. Whether this may have happened previously, I'll find out in time.