Just learn how to sharpen a knife. Don't get me wrong , I think the concept is awesome and I use something similar for signwriting all day and I admire the idea of you re - using the blades but it's not the purpose of the knife.
Snap off blades , replacement blades , scalpels are probably all able to be re-sharpened but that's not the idea behind the knife.......the whole idea is not to re-sharpen .
Good on you though.
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