I found a 8 mm hex driver in the trap of my washing machine all rusted, bit of scotch brite in a drill spinning like it was all shiny, then a heat treating for blacking but it killed the magnesium of the head magnate, MAP gas is pretty hot quenched in good ol’ WD40, just a reminder not to do that. I’ll re-magnetite at a later date I spose IDK. Not like these are expensive and all but BTW these are quite smooth.
