Managed that not with a tape measure... But with two of these...
They were tangled together, so I wrapped the tangled threads around my fingers and sharply jerked them apart
Tensile strength of stainless : 860MPa
Tensile strength of skin : 20MPa
Enough to say that there was a lot of blood. 3 fingers cut almost to the bone but thankfully no tendons or major blood tubes (technical term that) were in the way.
Had a mate that did it with a strand of silk that was loose on his shirt. Turns out blood ruins silk shirts
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