Wire Edge Prevention

[SteveG]

I ran my tests this morning, here are the results:

S30V Native 5 Sharpened at 15dps on Wicked Edge

Sharpened Stropped Burred Rolled Burred2 Rolled2
Sample #1 84 81 117 122 129 127
Sample #2 130 118 108 139 94 135
Sample #3 113 121 127 121 129 168
Sample #4 87 98 121 139 127 153
Sample #5 101 126 124 131 154 141
Mean 103 108.8 119.4 130.4 126.6 144.8
Std Dev 17.0 16.8 6.6 7.8 19.1 14.4

Notes:
Sharpened = Straight off the WE, progression 600, 800, 1000, 1500 Dia, Med, Fine Ceramic, 14, 7, 5, 3.5, 1, .5 micron diamond paste on balsa strops.
Stropped = 30 alternating-sides freehand passes on CrOx on leather.
Burred = 50 one-side-only heavy pressure passes on CrOx leather.
Rolled = 5 passes approx 1lb pressure on free-rolling 1/4" brass sleeve (cylinder)
Burred2 = 30 medium-pressure passes on 5 micron diamond paste on leather on WE - same angle as sharpening angle.
Rolled2 = Rolled

Notes:

- I think I must not be hitting the apex on some of my steps (though I raise a detectable burr with all of the stones), overall even my sharpening results were disappointing.
- The Burred2 was visible under 200x magnification (so to your point Mr. Grepper, I don't see advantages at this stage of my knowledge).

Steve, would you be able you to roll a burr-free edge of one of the knives you tested on your brass cylinder, and take a before-after sharpness score?
Without that your numbers reference the rolled burr to itself, i.e. they only tell us that the 5 mcrn burr after-roll scores worse than the 0.5 micron burr - but we do not have a number to tell a burr from the burr-free clean apex.

I have to drop sharpened knives to Mad Mex restaurants this morning, and after that will be able to join your experiments at my end.

That's what my numbers are trying to do, though I don't really know if my edges are burr-free or not (that's the reason I started this exercise).  It's probably not clear because of the way the data looks unformatted.  Let me restate it here, maybe it will be clearer:

Freshly sharpened blade (presumably no burr): 84, 130, 113, 87, 101
Stropped to refine edge: 81, 118, 121, 98, 126 (didn't seem to do much refining)
Burred (by single-side stropping): 117, 108, 127, 121, 124
Rolled: 122, 139, 121, 139, 131
Reburred (first attempt didn't seem like it created a burr): 129, 94, 129, 127, 154
Re-Rolled: 127, 135, 168, 153, 141

If I missed the point of your message, please feel free to point that out - I'm happy to re-test, but can be a little dense sometimes.