Popular Woodworking 2005-08 № 149, страница 76
Drill the 3/s" hole for the thumbscrew. The larger 1 "-diameter and 2 "-diameter holes can be either drilled or sawn depending on your woodshop's drilling capabilities. The plane body is sawn on the band saw. Sand the plane body. Drill the thumbscrew with a 5/i6" drill, as shown Round the edges with a trim router. The template here. Note that the position is Vs" closer to the for the layout of the body is on the bench. thread side of the head. Use a slim triangular file to make the hexagonal hole for the Allen wrench. are sanded, round over all edges using a wood rasp, or an Vs" roun-dover bit in a router as shown in the photo above. Enlarging the 3/8" hole to receive the thumbscrew is best done after making the hexagonal hole for the Allen wrench. At this time the thumbscrew will not quite fit into the middle hole, but it will later. The thumbscrew now is drilled and filed to make a hexagonal hole for the Allen wrench. Start by drilling a 5/l6" hole in the malleable iron thumbscrew head. This hole wants to be V8" closer to the threaded stem than the actual center. Do your drilling with the thumbscrew firmly clamped to avoid an accident. I find that starting the 5/l6" hole by slightly angling the drill can achieve the desired location. However, once started, drill straight across so the Allen wrench will be held at right angles to the holder. The hexagonal hole shape is achieved using a slim file similar to the smallest triangular file for sharpening hand saws or the square file in the supplies list. Orient the hex shape so that the cutter will face forward. The malleable iron files relatively easily. You want a tight fit, so keep testing for size as you file. Now the holder and cutter (the thumbscrew and Allen wrench) are ready to be fitted to the plane body. A V4" chisel will serve to enlarge the place where the 3/8" hole comes into the center opening. You want the holder to recess sufficiently so the cutter is held firmly against the wall of the center opening. You are now ready to grind the cutter. The Allen wrench is already hardened and suitable for the plane blade. By having a small container of water handy to the grinding wheel you can keep the temperature from spoiling the tip of the blade. Both legs of the Allen wrench need to be shortened somewhat. Because this is hard steel, a hack saw will not work. Grind a V-groove from all sides until the waste end drops off. Before grinding the cutter itself, study the cross-sectional drawing at right that shows the angles needed for an effective blade. Specifically, note the need for relief. In the words ofthe advertisement for stomach acid medicine, "How do you spell relief?" In cutting tools relief is spelled CLASSES The Home Shop 406 E. Broadway Hwy. Charlotte, MI 48813 517-543-5325 (9 a.m. to 5 p.m. Monday - Friday EST) John Wilson's toolmaking events cost $90 and are on Saturdays. Visit shakerovalbox.com for a current schedule. Router Plane - Jan. 14, 2006 Wood Block Plane - Jan. 14, 2006 Wood Scrapers & Tool Sharpening - Jan. 28, 2006 Gil Chesbro teams up with Wilson for the following classes: Spokeshave - Feb. 11, 2006 Traditional Frame Saw -Feb. 11, 2006 74 Popular Woodworking August 2005 |
