The most effective sandpaper for tough metals such as iron or steel is aluminum oxide, though the most effective sandpaper for softer metals such as aluminum or brass is silicon carbide. The assorted sorts of sandpaper, abrasives and sanding belts have distinct levels of grit and therefore are made of https://www.facebook.com/permalink.php?story_fbid=pfbid0vuY47mVAJy6xu3SK1ZxACHZWQJconX3a8FZ1nP6MPCJj8jnt6HRFfFSx3j9vpWNpl&id=61560512640678&__cft__[0]=AZVDbNnu3CjtxHSY7qE5yeUdbf2iZFPQ77yTbG4L6ETD8leJZVrh4RP1V1J7fx2IzIMkkDHq4lypRIeeGEt6DIWzKIQONSLdaKlt3woU4TMQVDcew55M0oeg7MvgCCeX73fEpms5TgjZsCMepgKV2x93V0lUBAE_ptCP_rGSeiTEByRadw4LGB1MNht3SjN5G_rBIGZX76xgWrE5JzWy1CzT&__tn__=%2CO%2CP-R