Recent content by SeasonLee

greenimi Please look at the interpretation from GeoTol Pro 2020 Season

Thanks again on all comments. Is this your idea? hope I am right. Season

Thank you, Burunduk Understood. Season

Thanks for all comments, Burunduk, 3DDave and mfgenggear. Please ref to the figure below for details, both callouts are legal, but what are the differences between these two callouts (with and without the datum feature qualifying FCF)? Thanks again for your help. Season

I have some questions about this print, and I tried to make some changes as shown below. The reasons for making these changes are: The common datum(A-B) is constructed after the individual feature is designated as the datum feature. The existing DRF refers to the datum feature itself, normally...

greenimi Take a look at Y14.5.1-2019 Season

pmarc At para 11.6.1.1 in Y14.5-2018 clearly states irregular shaped feature, a round hole in this example is just a regular FOS. There is an all around symbol used in the example of Figure 11-24, according to the para 3.44, this is a pattern features, a single hole is not a pattern. I...

pmarc I cannot find any example of composite profile callout applied on a single round hole from the standard, all examples with composite profile tolerance callout are irregular FOS or pattern features. We can see this word “PLTZE” very often from standard, which means the top segment...

I think composite profile tolerance can only be applied to an irregular feature of size or pattern of features, the round hole in this example is just a regular FOS, and that’s why I think composite profile tolerance is not a proper callout here. Season

What you said is absolutely right. We are talking about the legitimacy of the location tolerance on an integral surfaces, whether it meets the requirements of the ISO standards. On this particular case, position is allowed to use on the planar features only.

The use of the position symbol is allowed according to ISO 1101, but only for planar features. Both position and profile callout indicate the location of planar feature.

Mech1595 Please ref to this figure if you are using ISO GPS standard. .

Some one may be interested in watching this video When to Use DMP Flatness

I think its almost the same on the contents of 1101 standard

Burunduk This is indeed a good question for people with an ASME background, I hadn't noticed that before. Just providing some of the relevant content of the standard, and I am also looking forward to further interpretation as mentioned by greenimi.