Thread: got an old stone

my one isnt that bright, its more orange. and its ****in hard that stone. looks more like the picture that i posted. how to recognize what grit it has?

Sometimes woodworking shops and hardware stores can offer sound advice, and help with testing for you...but you will probably just have to be content with not know exactly what the grit is... but more importantly anyway is how it actually WORKS... try it, you can always go to a higher grit.