There is a video that shows how to sharpen multitool blades. The video title is 'What nobody will tell you about oscillating multitools.' Even though that video pertains to a power tool, maybe it would still be interesting to you for sharpening hand tools. As a newbie diyer, I really enjoy your videos and craftsmanship. Your work is an inspiration and I will now be on the lookout for tools to restore in building a collection☺️ Searching now through your videos to see if you already have one on teeth sharpening.
I have heard that from others, some pawn shops around here deal in musical equipment, some guns and others jewelry, I have a friend who has a pawn shop and he deals in guns and native American artifacts, jewelry, blankets and the like, but the ones that deal in tools have bins that get people in the door, and they do have more expensive tools and I do buy some of them from time to time!!!!!!!!!!!!!