Replies

1. 
   mrbird90 | Dec 28, 2006 05:09am | #1

   For starters is the wood of uniform thickness and is it flat against the sliding jig. On wide pieces I have noticed that when I tighten the screw to secure the wood one edge sticks or the other twists out if the wood is not perfectly flat. A cupped piece with the convex surface against the flat back will twist out because the screw is not perfectly centered. Just a few obvious things to check.

1. 
   Stevengiamundo | Dec 28, 2006 08:08pm | #3

   This is a good suggestion...I'm fairly sure the board is flat...because I took cuts from both ends (Board was 3' long) ...and ended up with exactly the same result....but I'll check this tonight.

   I'll also replace the blade...but I'm thinking that if the blade were dull, slowing the feed rate (which I did for the second pass) would reduce or eliminate the problem.

   My second pass showed no change... except for smoke from scorced wood, which increased significantly. ( thought I had a fire in the cabinet - very scary)

2. 
   Stevengiamundo | Dec 30, 2006 02:16am | #7

   You were right, my test board was not true...one edge was .125 thicker than the other!

   Also found the saw blade off .010 an the rail of the tenoning jig, which rides in the T slot, is .009 too small...not only does the fixture "Sway" side to side, but the slop allows the fixture to tip.

   Also cleaned the bottom of the fixture, which had sawdust/oil gunked on it.

   Made some temp adjustments and ran a test cut with a piece of plywood...everything was as it should have been.

   Thanks for the help and advice.

2. 
   cadiddlehopper | Dec 28, 2006 09:28am | #2

   Make sure your blade is parallel at 22.5* setting. If it is, your blade may be dull. Good luck!

   Cadiddlehopper

1. 
   Stevengiamundo | Dec 28, 2006 08:10pm | #4

   I assume, if the blade is perpendicular at 90 degrees, and parallel to the miter slot, then it is parallel at 22.5 degrees... did I miss something here?

   I can check with a dial indicator..which I will do tonight.

   Thanks...

1. 
   CADbuff | Dec 29, 2006 06:33am | #5

   Hi Steve,

   FWW #179, October 2005 - Tablesaw Tune-up by Roland Johnson will show you the way. In particular, "align the miter slots with the blade" mentioins shimming the trunnions or the table top to get miter slot to blade parallel at an angle other than 90 degrees.

   Lee

1. 
   Stevengiamundo | Dec 30, 2006 02:11am | #6

   Thanks.

   I need to dig out that issue...I have every one going back 5 years...

   The blade is out .010...so this is my project for the weekend.