Popular Woodworking 2004-04 № 140, страница 20
CIRCLE NO. 156 ON FREE INFORMATION CARD. Another thing I'm having a problem with is my crosscut sled. I placed my straightedge across the sled's fence and it appears to be completely true. And if I put my machinist square on the left side of the sled's fence, it is indeed square to the blade. But on the right side it's off a bit. Afrim Hoxha Emerson, New Jersey A 1i/32" gap is too much for accurate work in my opinion. If your straightedge is true, the next thing to check is the base of the saw to make sure it's sitting flat on the floor. A radically uneven floor can twist a cast-iron top out of true - this can happen easily to contractor-style table saws. If that's not the problem and your saw is new, call the manufacturer and ask what they can do about it (such as sending you a new top). If the warranty has expired, you have two options. Go to a machine shop as you suggested, or - if you can localize the high spot and it's quite small - use a diamond stone or coarse sharpening stone to grind it down yourself. As to your crosscut sled issue, have you checked the squareness of the work you cut with your sled? Is the keeper piece on the left side square and the piece on the right not (an unlikely occurrence)? I would judge your sled not as much by what the straightedge says but by what results it produces. And if it cuts square on the left side only, that's acceptable. Work only on the left. — Christopher Schwarz, executive editor Most Doweling Jigs Can't Handle 5/s" Bit I am new to woodworking and I am going to build the "24-hour Workbench" (December 2003). I have a question about using a doweling jig and a 5/s" bit to drill out the bench-bolt holes. I haven't purchased a doweling jig, but I noticed that most have up to a V2" guide bushing at most. My question is how to drill the 5/s" hole with the 1/2" bushing. John Mitchell Aurora, Colorado I neglected to mention in the article that my doweling jig (an antique Stanley) has a bushing but that most jigs do not. Fear not, it's an easy fix. Drill the hole with a 1i/2"-diameter bit using your jig. Then "chase" the hole with the 5/8" bit. The existing hole will guide the bit. I've done this many times and it works like a charm. PW — Christopher Schwarz, executive editor 18 Popular Woodworking April 2004 |
