I have a few grinders but I'm guessing you mean the two wheel flat bed linisher. It's a woodworking machine but it's amazingly good on metal with the right belts. Single speed (fast) and should take 50mm wife belts but I've added a raised platen for 25mm width and only use that size belts.
The gorilla glue is for surfboard / paddle board making, not knives.
Cheers for that Stew