What kind of grinding wheel is used for hand grinders made of aluminum plate and stainless steel, and how to repair the bottom of the grinding wheel

What the person above said is too strict. Use a 46# white steel grinding wheel to grind aluminum plates and stainless steel plates. The smoothness is guaranteed to be very good. You can use oil to grind aluminum plates and stainless steel plates. As long as you grind aluminum plates Once it's fixed, it can be used as an iron grinder. You just need to grind it as much as you want. To grind long strips of stainless steel, I suggest you make a jig grinder (at least the flatness will be absolutely OK after grinding it, and you won't be afraid of deformation. Use a tungsten steel rod to knock it out. No problem), some time ago, I ground a stainless steel piece with a length of 300, a width of 30, and a thickness of 7.5, with a tolerance of +0--+0.01 and a deformation of 0.02