I have a few putty knives that are the very stiff kind. thick metal, dont bend, that I use for a variety of things, mainly scraping glue off off surfaces before it cures.
These werent cheap, and they are getting so mucked upwith old glue and dirt.
besides giving them a cleaning with mineral spirts or other solvent, can I run them lightly over the grinder?
they all have a beveled edge on them, like a chisel.