Hi Folks,
I'm seeing a problem with my tablesaw (Jet cabinet saw) that I cannot explain.
First, I'll say my tablesaw top is flat and the workpiece I'm cutting is flat. I've adjusted the blade's tilt with an engineering square such that the blade, relative to the table, is dead on 90 degrees. The square rests directly on the blade, not the teeth.
After making a cut, I notice a small gap at the bottom of the workpiece, as shown in the diagram below:
tablesaw angle issue.jpg
If I put a square against the cut edge and look at the gap along the 6" edge, the gap is about 1/32", which is about 0.3 deg off of 90 deg. Since I'm using this edge as a reference for boring a hole that extends 6", I can't live with that variation.
Also, if I simply rest the piece against the blade after making a cut, I can see a small gap at the bottom.
And, if put both the workpiece and the engineering square used to setup the blade on the table, with the square against the cut edge, I can see the gap.
In short, the angle of the cut does not match the angle of the blade.
I've checked the arbor runout. It is zero. Shockingly zero. I'm impressed every time I've done that.
I've checked the flange that the blade sits against. It's runout is also zero.
The blade itself, a Forest Woodworker II small kerf, has about 5-10 mil variation across its surface, but I don't think that's the problem because:
a) I made the same cut with another blade and got the same result
b) Even if the surface of the blade has some variation, that doesn't mean the teeth have the same variation
c) Even if the teeth have some variation, I would expect that to cause some wobble or a messy cut, but not an incorrect angle. And the cut is clean.
Any ideas?
---Mike