Read this and memorize it. Woodworking CANNOT make use of those kind of tolerances!!! If you think it can you are only fooling yourself.Keep in mind..... .0015 can make a difference in metal working.......working in woodworking to 1/650 the of an inch is pretty unrealistic. I'd not worry about that. I'm usually pretty happy if things are within 1/64th. Wood expands and shrinks....whats perfect today won't be tomorrow.
I do not even try for 1/64 inch. I am perfectly happy with 1/32" for the vast majority of projects.