Chris Fry at
M.D.T.S. put together this PDF consisting of photos of various "contact weapon" (knife, axe, etc.) injuries. Should provide a pretty good reality check to those who underestimate the damage that can be done with such a weapon.
WARNING! these photos are extremely graphic, don't gripe at me if they upset your stomach or offend your delicate sensibilities.
here ya go:
http://www.mdtstraining.com/Contact-...aponWounds.pdf