Reply by PurpLev

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Posted on Expectations for Table Saw Crosscut Accuracy...

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8554 posts in 4258 days

#1 posted 04-27-2009 04:13 AM

0.001 runout on the blade/miter guage is considered more than adequate for fine woodworking. with wood movement and esthetics, I think keeping a working scale of 1/64th for parts should be good enough – I believe that in reality, most times you get much better results than that, also thats what I’m seeing in your post (0.005” variations)... sounds like you got it tuned enough in my opinion, I wouldn’t worry about it too much.

althought, I’m surprised you’re getting those variations using an Incra miter gauge… heres what you should check:

1. miter gauge bar has no slop in the miter slot – use the plastic expandable washers to tighten the bar up.
2. make sure you butt the board to the stop, and keep an even pressure against it everytime (making sure that all pieces are pushed equally to the same stop spot)

in addition you could:

3. build a cross cut sled – using 2 runners, would eliminate more of that sloppiness in the slots, and give you a better safer way to crosscut in general

or even:

4. (as woodchuck suggested) use a mitersaw for cross cuts, if you really want the safest, and easiest way about it (space and budget allowing it)

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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