Brand new virginal 600 grit disc, lots of water (match stick size flow ) did the back of 2 small agate cabs and the front of a largish cab of ( I think) petrified wood.
Had this happen on 2 other discs from another supplier, is it me, or just cheap and nasty discs ?
Had this happen on 2 other discs from another supplier, is it me, or just cheap and nasty discs ?