I recently bought a Ridge Carbide TS2000 FT box
joint blade. The blade cuts a beautifully flat topped grooves
as expected, but oddly they are 0.142" wide instead
of the expected 0.126". I have carefully measured the
run-out of each of the 40 teeth as I hand-rotate the blade;
the maximum deviation across the entire 10" blade
is 0.003". Similarly, I find no evidence of misalignment
between the blade, the miter slots (3hp Sawstop PCS)
or fence. The carbide teeth themselves are 0.126, as
expected.
The problem occurs whether ripping or cross-cutting
and is seen both on long (~6") and short (1/8") grooves.
I compared the new blade to a recently re-sharpened
Freud Premier Fusion ATB full kerf blade: The groove width
with the Freud blade comes out almost exactly 1/8", 0.126"
(+/- a mil or two).
The attached photo compares the results of the two blades,
both in rip and crosscut. Other than swapping out the
blade, the grooves were cut under identical conditions.
Perhaps the Ridge blade vibrates a lot, while the Freud does
not? Seems implausible.
Would love to hear if others have found similar problems.
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