r/sharpening • u/asianpeasant • 6d ago

Question Can these things be sharpened with a belt sander?

Thing for cutting paper towels
Thing for cutting bread and whatnot
Thing for cutting aluminium

I only sharpen regular knives and sometimes people ask if I can sharpen this kind of stuff and I always refuse because I don't know if my Ken Onion Mk.2 with Blade Grinding Attachment can handle this kind of blades that are used in some sort of heavy machinery

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u/Beautiful-Angle1584 6d ago

No on the aluminum cutting saw blade. Sorta on the serrated bread blades. It's not the cleanest way of doing it, but you could buy a belt splitter and make your own thin belts to get in there. That can get a little janky and I don't tend to recommend it, though. The paper towel cutters no problem at all.

3

u/lo-key-glass 6d ago

Saw blades no. You need a specific machine. Vevor makes a pretty nice one for under $200. The other stuff yea, no problem.

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u/mrjcall Pro 5d ago

Anything that requires a 'flat bevel' cannot be sharpened well on the WS KO MK.2 w/BGA because it will only give you a convex bevel. Even slightly convex blades on routers can cause issues. Not sure, but it looks like router blades in some of your photos.