I membered Crustys post on making one of these so this is my rough and ready version needed for gaskets for my veteran AJS engine. Made from a piece of scrap alloy and a piece of craft knife blade which easily re sharpened with a stone, I did not bother with graduations as it can be precisely set with dial calipers from the .500 inch dia clamp button. Will cut from .75 to 6 inch dia.
Some gaskets made so far.
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