Tag
#asme y14.5
2 topics across all disciplines.
GD&T fundamentals
Why plus-minus dimensioning fails on real parts, how to read a feature control frame, the fourteen geometric characteristics, and what the maximum material condition modifier actually buys you.
Datums and datum reference frames
Why three datums and not one, how 3-2-1 location removes six degrees of freedom, what datum precedence actually changes, and why the fixture, the gauge and the drawing must all agree.