my two cents...nine thousandths, .009, to me is an acceptable tolerance for a piece done on a legacy machine...there are times when we are cutting up some solids for a job and overnight I have seen a difference of thirty thousandths, .030 or 1/32",the next day...I have even gotten drawings from architects that had measurements with 1/64th inch dimensions and just had to shake my head, LOL...and of course, those were all computer generated drawings...as far as the corner spec's go, the greatest difference there being thirty thousandths, .030, 1/32", so if you wanted to tweak that a bit you would most likely get better results...but like I said, to expect metal-turning lathe tolerances on a legacy ( i.e. .001), might be unrealistic...even hand sanding can disrupt anyone's tolerances...bill's four block method is what we do and if we are off a hair, we don't sweat it...just one person's opinion here...joe biunno
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