Why would raising the saw blade change the accuracy?
who_is_john__galt
| Posted in Power Tools and Machinery on
When I cross cut a 7″ pine board and measure it for square, I find the edge farthest from the miter gauge fence is .015″ off, about 1/64″. So it really about 89.85 degrees.
I’ve tuned the saw, the blade a Forest WW II, has minimal runout as did the arbor and flange. I aligned the blade to within .002″ of the miter slot.
I then set the miter gauge to square with the blade, using a architectural drafting sqaure. When I cut, with the gullets of the blade just above the surface of the wood, the cut is off by 1/64″.
However, if I raise the blade all the way and cut again, the cut is dead on. Why would this happen?
Replies
When you make the second cut do you just trim off a small amount from the first ? If so the first cut may show signs that the work is moving on you and the second cut you are taking a trim cut that doesn't put much of a pulling force on the work.
Only thing I could think of.
You don't mention the type, brand, or age of your table saw. I've seen contactor saws do this very thing due to the casting of the trunion.
Give us more info.
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