Re: What's the diff.
More then color. .010 to .030, or .001 to .005 + or - .001 or .0005 or .0002 + or - .0001=.0002 tolerance in the marching of some parts. I have worked in .00005 + or - 0 at 72 degrees on some parts! A good machinist can confirm my facts. Sad to say but some parts are still out of speck today.