Being incredibly impatient as I am, I decided to start the coarse honing of my new crappy razor on 1200 grit sandpaper. I wasn't really expecting any sort of edge but I was really astounded with the results. Althogh obviously not shave sharp, it'll still shave hairs off my arm and even (just) pass a HHT. Is there any reason I shouldn't be doing this for very coarse, pre waterstone honing?