Popular Woodworking 2004-11 № 144, страница 87
a polishing stone and I caress its surface with the blade. The Ruler Trick This is the radical part! I freshen the slurry on the #8,000-grit stone with the Nagura. It's important that the slurry isn't too sloppy and wet. If it is wet, I sweep the water away with a finger. I then stick a 6" inexpensive steel ruler, (about 0.5 mm thick) to the stone by sliding it to and fro a few times down one long edge of the stone. The blade is placed in position on the stone for movement two with its edge off the stone. The middle of the blade is resting on the steel ruler. Using four fingertips, placed just behind the top of the bevel, I draw the blade's cutting edge onto the stone. You may feel a slight catch as the wire edge meets the edge of the stone. The blade edge is only allowed to come about 5/8" onto the stone before going back off the edge of the stone. This short stroke is repeated about 25 times for a new blade and about 12 times when re-sharpening. Because the flat side of the blade has been raised up by a degree or so on the ruler, you will see a narrow band of mirror polish across the tip. This need be no wider than V^", and will not get much wider with subsequent re-sharpenings. If examined closely, you should see that the mirror polish has replaced the #800-grit scratches at the edge. I wipe the blade on a sponge cloth, dry it and apply a thin coat of Camellia oil. The job should be complete and the wire edge should have floated off on the stone, or sometimes on the sponge cloth. It should shave hairs from your hand without difficulty. PW Place the steel ruler on one long edge of the stone - friction from the water will hold it in place. Place the blade on the stone with the cutting edge off the stone. With light pressure bring the blade about 5/s" onto the stone. This short stroke removes the wire edge and polishes the back of the blade. A picture of success: The front of your cutting edge is polished and ready to go to work. Lie-Nielsen Toolworks 800-327-2520 or lie-nielsen.com 1 • Hand Tool Techniques Part 1: Plane Sharpening with David Charlesworth video, $25 1 • Hand Tool Techniques Part 2: Hand Planing with David Charlesworth video, $25 86 Popular Woodworking November 2004 |
