- The edge of the knife/sword/arrowhead/saw/chisel is always sharp.
- If you need/want to test a blade’s sharpness, see rule number 1 and proceed accordingly.
- Never test the blade against something you are not willing to cut. Because #1.
- Always be aware of what is under/behind the item you intend to cut or are testing the blade on. Because #1
Yes, I have a large flap of skin missing from the tip of one thumb. I was mucking around with the tiny little useless-for-anything blade inside a teeny little Leatherman (TM) Micra (R) Thursday evening. That teeny little smooth blade is quite sharp. I did not realize I’d skimmed off my hide until the blade touched the thumbnail. Yes, I was stupid, yes, I know better, no, I will not repeat the experiment.
At least not with that particular sharp pokey-slicey thing.
*With profound apologies to Col. Jeff Cooper.