Quick question. I am trying my hand an knife making. I am focusing on making small fixed blades and folders. I have use a craftsman 2 x 42 and/or files for flat grinds.

I would like to do some hollow grinds also. I was thinking about using a mandrel (like tracey sells) attach it to a old motor i have with the four pulleys and use 10" bench grinder discs at lower speeds. Would this work? I thought I remember in the $50 knife shop a bench grinder was used? The mandrel setup could be used to disc grinding and buffing too so it is not like am investing much.