Join Date: Dec 2015
Location: The Very Tip of Lake Michigan
I have both a wood shop and a metal machine shop. They are in two different rooms. I take a different approach to accuracy depending on which room I am in. In the metal munching room, aside from the lathe and mills (two), I have calipers, dial indicators, micrometers, feeler gauges, precision rules, machinist levels, triangles, 1,2,3 blocks and on and on. The parts that I need to make while in that room must often be precision down to tenths of thousandths of an inch tolerance. I spend a heckofalot of time on machine and stock setups, and I spend an even greater amount of time on measuring and execution. Precision is not just anything; it is the ONLY thing.
The woodshop (in my opinion) does not command the level of precision that is paramount in the other room. I absolutely build to a level of precision that most always translates to very nice examples of my skillset. However, I have never set up a saw blade to within tenths fence or miter slot to front/back of the blade. Iíll wager that arbors, bearings and most blade washers on the average table saw arenít precision enough to keep ultra-precise measurements repeatable. Also, that amount of precision cannot be measured in the finished cut without special tools. The marks on an average steel rule are even thicker than a single thousandth!
I do insure that the fence is parallel to the blade within the tolerance of a steel rule. Never failed me yet. Time and place for everything. And as an aside, I do not crosscut on my table saw, so miter slots are not a showstopper for me anyway.
Another $000,000,000.02 worth of advice,