BASIC DIMENSIONS USE G D &T TOLERANCING, THE QUESTION IS I HAVE BASIC DIMENSIONS COMING FROM X & Y AXIS. AM I SUPPOSED TO "CUT" THE TOLERANCE IN HALF WHEN DIMENSIONING THE BASIC DIMENSION? example X AND Y ARE BOTH [2.077] THE TRUE POSITION CALLOUT IS ALLOWING UP TO .015 SHOULD I USE .0075 FOR X AND .0075 FOR MY Y TOLERANCE?
You obviously have no idea about how basic dimensions work (or even that there is a button marked 'caps lock' on your keyboard...), so I'll give you the advice that I nearly always give those who either can't or don't understand the mathematical theory behind it:
Take your "true position" value, and divide by 1/3 for the safe amount of tolerance in either direction. This will in effect be over-tolerancing the position, but will keep even the least experienced operator safe from creating scrap.
You obviously have no idea about how basic dimensions work (or even that there is a button marked 'caps lock' on your keyboard...), so I'll give you the advice that I nearly always give those who either can't or don't understand the mathematical theory behind it:
Take your "true position" value, and divide by 1/3 for the safe amount of tolerance in either direction. This will in effect be over-tolerancing the position, but will keep even the least experienced operator safe from creating scrap.