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I am designing gauges, but not conducting Gauge R&R’s and I have the following questions regarding the link/connections (or lack thereof) between the gauge standard ASME Y14.43 and AIAG recommendations 1.) Is there a direct link between 10% tolerance assigned to the gauge per Y14.43 and...

Checkerhater, Burunduk and everyone, Again, I am not understanding how do I know when a profile will control the size and form together or just the form (as stated by CheckerHater)?

Are those two coaxial cylinders or circles free to float?

Yes, I understand that. I am not getting how for that feature of size the profile could control only the form error and not the size? I am thinking that the actual surface should be between two coaxial circles .0004 apart, right? Then how the size is NOT controlled within .0004. That is my...

CheckerHater, On example shown the feature is feature of size, so I think, the size is controlled by the profile, doesn't it? On fig 11-16 the feature is not a feature of size so no issues controlling the size requirements/ or refine them.

I got the following explanation seen below, but I would like to ask if you agree with the assessment? I see here are many GD&T experts that can help me with my follow up questions. Unfortunately, the discussion I had, has been deleted on the original site, as the people there (original...

ASME world If there is no implied coaxiality tolerance (co-axiality tolerancing of features that are shown to share a common centerline/centermark), but there are implicit zero basic dimensions (both linear and angular, implied by simply showing multiple diameters on a single, common...

What would be the best explanation, in the layman terms if possible, on why circularity CANNOT be measured and qualified (per Y14.5’s definition) with a caliper or micrometer. I was trying to convince and influence people that measuring the local sizes (taking consecutive measurements) and...

Has been indicated that profile of the surface could work. Per another discussion pmarc recommended to use composite profile with dynamic profile modifier on the lower segment. Re:"About usage of composite profile, I think that even more appropriate control could in many cases be the dynamic...

pmarc, I do have a question if you don't mind: if I remove CZ from the lower position what is controlling the spacing relationship between the studs in ISO GPS system?

ASME Y14.5-2009 or 2018 Is there any requirements for datum targets to be related (orientated or located) to its higher precedence datums? Searching for applicable and relevant figures in the 2009 and 2018 standards, I cannot find a single figure where datum targets are used AND the...

Thank you all for the answers. My intention is to find forums where specifics are discussed: roadblocks (common objections against) proper implementation, (new) ideas how to sell it to people and higher management, do's and don't(s), or discussions in general about MBD/ MBE I knew about Y14.41...

Just for my own information, do you know any good forums where MBD/ MBE issues are discussed and debated. I am trying to learn more about this subject and talking with subject matter experts in this area would be a good idea (at least in my point of view). Please let me know what information...

2x before the size dimensions automatically creates a pattern (pattern mechanism creation in Y14.5). The question is, if I am using INDIVIDUALLY note, will I break this pattern or not, according to ASME Y14.5?

I need to be able to break the pattern of those two Ø6mm holes and I also need to break the pattern of those two Ø10mm holes. So, the holes within each pattern should not be contain in the pattern. Actually, I would like "to destroy" the patterns.

Just because it is not shown in the standard as an example, does it mean it is not allowed? Could be used? Is it illegal?

Yes, correct. What are the unintended consequences of such approach? Anything you can think of?

Can I use INDIVIDUALLY notation near the size dimension to break the alignment -simultaneous requirements- between those Ø6mm and Ø10mm holes? (the mutual interrelationship between each other) I've seen it used with profile, but never with position. Is it something wrong to use it...

I think the way you show it (datum D in the lower segment) is NOT correct. That is not composite (per ASME Y14.5) Should have been multiple single segments and NOT composite

chez311, Do you know which is the equivalent modifier in ISO? I am using ISO for my gauge design work, but I am not saying I am particulary familiar with that system. Thanks