Recent content by Lee Saxon

Thanks y'all! 10.5.3.4 & Fig 10-52 were exactly what I was looking for!

Y14.5 1994 5.11.1.6 Holes of Different Sizes states that you can create a FRTZF / Composite Tolerance for features of different sizes (ie ones where you can't simply use one callout with a '2x') by drawing the FCF (plus a notation such as "TWO FEATURES") separately from any size dimensions, and...

Good idea, I've added a PDF of a simple example.

This seems like a pretty straightforward design case if you're trying to orient but not necessarily locate two parts, but it's not something I've ever found a great example for. I've got two holes. An imaginary line drawn between their centers would need to be *oriented* perpendicular to a flat...

I mean, what's the definition of "perfect form" here? If the hole tolerance tells me that it applies only when a Ø19+0.5/-0 shaft is at LMC (and therefore "perfect form"), shouldn't that mean only when you've got a perfectly straight Ø19 shaft in which the upper limit doesn't come into play?

I'm confused about how we're getting 18.5 from "19 +0.5/-0"?