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Single side bevel edge sharper than double bevel edge?
#1
In this post, http://bessex.com/forum/showthread.php?t...65#pid1265
 
I was talking about sharpening a single bevel chisel, and how easy it is to sharpen them to 100 gf sharpness.  I blurted, “I was surprised that it ended up @ 100 gf sharpness considering it is a 25° single bevel.  I would have thought that a more acute angle like a 15° dps knife would be easier to sharpen to 100 gf, but that was not the case.  The chisel sharpened to 100 gf without jumping through any hoops at all.”
 
Further in the thread, http://bessex.com/forum/showthread.php?t...78#pid1278
 
Mr. EOU stated, “To tell you the truth, we are very intrigued by the sharpness levels reported in single bevel edges. We do not doubt for a second that these edges are easily sharpened to that level because it is an edge commonly used in medical applications and we have seen reports of very similar successes before.”
 
I know that Mr. Ken routinely sharpens single side bevel chisels to 100 gf or sharper on the Tormek. 
 
I remember when I sharpened that chisel I thought the 100 gf sharpness without really trying was interesting, but for some reason didn’t give it further consideration.  But now I’m wondering if a single bevel edge can actually be sharper then a double bevel.  DE razor blades are double bevel.  Why not single bevel?
 
I know some knives are sharpened with one side bevel more acute than the other.  What is the reason for that?  If indeed a single side bevel can be sharper than an equal double side bevel, does it also follow that a 15° bevel on one side with a 20° bevel on the other sharper than a double bevel of equal angles simply because the bevels are not equal? 
 
I’m totally clueless!  Any ideas? Huh
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Single side bevel edge sharper than double bevel edge? - by grepper - 09-07-2017, 11:49 PM

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