I have a 3 HP Delta Unisaw. With the cast iron wings attached, what are considered acceptable height differences throughout the table? If I place an accurate straight edge (+/- .005 on 150") and use feeler gauges when all is attached, at worst there are a few places where the difference across the two wings and table top is .005, and other places are perfect. I've tried shimming the wings to get everything as close to perfect as possible but this seems almost impossible. What is considered acceptable tolerance for the entire table top? If I measure each wing and table top separately they seem to be very accurate. (.002 at the worst). So in theory I should be able to get the table almost .002. However Iíve had trouble getting this result and itís getting frustrating. Iím wondering if itís even necessary.
(Solid Wood Machining Forum)
From contributor A:
I think you're going way overboard for a table saw. Just reasonably flat is more than acceptable. More important is how the joints line up. They need to be as flush as you can get them because this is where the scratches on your sheet goods are going to come from. I suggest filing the edges more than the factory bevel. Instead of a bevel, make it a nice smooth round over. This will eliminate most of the scratching that might otherwise occur.