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When I put on an edge here at the shop I make sure the knife'll shave hair on my arm, but I want it to be a raspy kind of shave to confirm that I have a toothy edge. The reason is, this kind of an edge "grabs" most media a lot better (like meat, rope, etc) and cuts more aggressively and effectively. The edge has little ridges on it from this process which act like micro-serrations. The sharpening line will appear slightly higher on the left side of the blade than on the right, as part of the final pass that gives the edge it's tiny serrations. RESHARPENING As far as resharpening goes, you can maintain the toothiness on it by sharpening it on a rough grit Arkansas stone, then doing your last few passes with the edge trailing, to rough the edge slightly. When you’re using a ceramic rod, pull away for the last few passes. If you have any problems at all, send it on in for a free resharpen, we’ll do our best to get your knife back to you quickly.
REVIEWS (re: edge) Tactical Knives Dua Folder Review (March 2012) Razor edges are nice for shaving arms, but tougher chores like rough manilla rope need a tougher edge. A less finely honed edge retains more of the microscopic "teeth" left by the grinding process that created it, and for many uses a relative coarse edge on a working/general purpose blade may be better. It did create a noticeably bald spot on my arm in brief testing out of the box. I put the folder to work on cutting up 5/8 inch rough manilla rope, some extraneous nylon webbing I had on hand and creating a field repair for a busted bootlace out of 550 paracord. I then whittled a spear-point on a seasoned bit of half-inch hardwood tree limb and also notched it for a cooking bail lifter. The Dua cut and pried open three plastic-banded and stapled cardboard ammunition cases, and helped me reduce half a dozen cardboard boxes to pieces small enough to go out in the trash. It also came in handy in clearing out encroaching weeds with half inch woody stems from the fire pit out back. After all that, the edge was still perfectly usable but needed a touch up on a sharpening steel before it would again remove arm hair.
Tactical Knives SATU Tough S.O.B. (July 2011) I was able to baton the Satu through seven-strand .25 inch aluminum service cable with two light blows from a brick. The edge was unaffected. |
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