The most beneficial sandpaper for tough metals which include iron or steel is aluminum oxide, when the most beneficial sandpaper for softer metals which include aluminum or brass is silicon carbide. Reducing disks made of SiC Within the arts, silicon carbide is a popular abrasive in present day lapidary as https://www.facebook.com/permalink.php?story_fbid=pfbid0aqTqdMZud1GurkviKFTsNMKJHGZD1XDeLV9TroJqKzjZXLCFuy6MbJM8Riig5JL5l&id=61562415773754&__cft__[0]=AZVTVgz8Mww2Hsm9I5R3Asxv-ZWuNuccGtCDDqo3waDsc1VVuL602otgWkBywzpsP-4pGgMnLjGCMAto7dNMzn4e1GKTc03ckuV1hXYWJYV8Yvs8HqoHyLmrjCA9vLd5xQtgedxK1-YGkbP9w_k9m-gD8oM-pB2AfImmaBOTeYBn6MW0LWf5rjJ1g3JeQ0OICAnSCidS5z66WXh0wKzurqM-&__tn__=%2CO%2CP-R