can i use sand to grind mirror? | Yahoo Answers
Sep 13, 2012· can i use sand to grind primary mirror for telescope? i have searched through out our city but i am not getting it. i have only got carborundum (#80) stone only, as i know stone will not work only powder is needed. so i am asking you can sand be used for grinding? or if that grit stone is usable then can i crushed it to make it powder form?