Salvaging sawblades.
I have a bunch that were included in a sale of a DeWalt radial arm saw. I’m the third owner, the second purchased it all from the widder lady of the original who bought the saw ‘n stuff in 1968. All are H.S.S., set tooth, beautiful thick steel, not like the thin junk sold today holding up carbide tips. Used brake drum cleaner and wire brushes, shined up like new, got about 10 of ‘em done- oughtta last me until I leave this world.