To: the invisib1e hand
Hmmm, self sharpening knives aren’t exactly a new idea, just expensive to make.
They are laminated with the hardest metal being a thin sheet for the edge. The metal then gets progressively softer as you move away from the edge. It then wears itself sharp.
15 posted on
12/25/2010 6:18:27 PM PST by
SampleMan
(If all of the people currently oppressed shared a common geography, bullets would already be flying.)
To: SampleMan
They are laminated with the hardest metal being a thin sheet for the edge. The metal then gets progressively softer as you move away from the edge. It then wears itself sharp.
My fifty year old Forney welding manual shows how to do this
with hard surfacing rods. Works pretty well on mower blades.
40 posted on
12/25/2010 8:37:32 PM PST by
CrazyIvan
(What's "My Struggle" in Kenyan?)
To: SampleMan
Correct. Also Google the “Scovill Hoe”...
60 posted on
12/26/2010 11:20:06 AM PST by
TXnMA
(Remember the Alamo! Remember Goliad! REPEAT San Jacinto!!!)
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