09-18-2018, 11:59 AM
Brass-rolling test on a Spyderco Chaparral, freehand sharpened to 17dps.
Procedure: Sharpened on fine diamond, then stropped on CrOx/leather (whole blade). Then resharpened half of the blade on extra-fine diamond (which usually leaves a burr). I rolled with less pressure this time, maybe 1/2 lb.
No-Burr section pre-rolled: Avg 185.7 StdDev 11.5 - rolled: 191.7/25.8
Burred section pre-rolled: 275.3/10.5 - rolled: 297.0/18.7
This is a pretty coarse edge, so I expected quite a bit of variance. What I didn't expect was the very high numbers, the no-burr section of the blade still easily push-cuts newsprint and phone-book paper across the grain even after being rolled, and could nearly whittle hair right after sharpening.
Procedure: Sharpened on fine diamond, then stropped on CrOx/leather (whole blade). Then resharpened half of the blade on extra-fine diamond (which usually leaves a burr). I rolled with less pressure this time, maybe 1/2 lb.
No-Burr section pre-rolled: Avg 185.7 StdDev 11.5 - rolled: 191.7/25.8
Burred section pre-rolled: 275.3/10.5 - rolled: 297.0/18.7
This is a pretty coarse edge, so I expected quite a bit of variance. What I didn't expect was the very high numbers, the no-burr section of the blade still easily push-cuts newsprint and phone-book paper across the grain even after being rolled, and could nearly whittle hair right after sharpening.