Grinding and Sharpening: In metalworking, sandpaper may be used for grinding and sharpening several metal applications and surfaces. Coarser grits, like 36 or 60, are used to eliminate material and condition the steel. This is very useful for reshaping or sharpening blades, chisels, or other cutting equipment. Lasers could be https://www.facebook.com/permalink.php?story_fbid=pfbid0tvXfKexTwuwsJgdvisAkVRKLmCxisckjE8yxDkWoWw71Z88fb3c6qQ8a22k5Yo56l&id=61562415773754&__cft__[0]=AZVjGkbsuP-XvPo1zPa0xz_9gdpDdxir5HjVMnHQshjZslMegX9xwQiDbZT18N6sCJNK9hWgAhixJVLiWELDcYAqAUT3bTbLhSk1w0Guv-My5rUcvmpnvsdtGWh67zqjtH6sr1w7a89M3W6NnOPOps_o_9Vb9mFjjNl_xnQ6mqSk_zhpLY1QUUTrSbw5qNj_7H30uQ-udmPWGFvlX-JU2qms&__tn__=%2CO%2CP-R