FCF issues

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Does anyone know why there would be a "0" by the maximum material modifier on a print, after the diameter symbol? it's the tolerance zone area. I've seen thousands of prints and never one in this format. I've looked and looked for answers and cant seem to figure it out.
thanks.

[UKCMM]

If I am reading it right it means these is zero positional zone at MMC as the feature moves away from MMC you gain positional zone.

[Wes Cisco]

This is GD&T. It is meant to be interpreted with a standard. Most common in the United States is ASME Y14.5. In the rest of the world it is mostly ISO 1101 & such. The concept is that when the feature being controlled is at it's maximum material condition, it is allowed zero deviation from nominal with regards to the geometric control applied. As the feature deviates away from it's MMC size towards it's LMC size, it gains tolerance equal to the amount it has departed from MMC. This concept works best when applied to clearance features with a hearty size tolerance. If everything I just typed reads like gibberish to you, go to your supervisor and tell them you need an introduction to GD&T class ASAP.

HTH & ymmv.
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[[email protected]]

If I am reading it right it means these is zero positional zone at MMC as the feature moves away from MMC you gain positional zone.

so perfect is good but it must be held to the datums?

[[email protected]]

This is GD&T. It is meant to be interpreted with a standard. Most common in the United States is ASME Y14.5. In the rest of the world it is mostly ISO 1101 & such. The concept is that when the feature being controlled is at it's maximum material condition, it is allowed zero deviation from nominal with regards to the geometric control applied. As the feature deviates away from it's MMC size towards it's LMC size, it gains tolerance equal to the amount it has departed from MMC. This concept works best when applied to clearance features with a hearty size tolerance. If everything I just typed reads like gibberish to you, go to your supervisor and tell them you need an introduction to GD&T class ASAP.

HTH & ymmv.
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found it, thank you! the tolerance is in the bonus

[KIRBSTER269]

Capture.JPG

You mean like this? If so it means the only tolerance you get is from bonus, has to be "perfect" no such thing, so they give you bonus for the small amount of error. If not show us a pic of what you mean

[[email protected]]

Capture.JPG

You mean like this? If so it means the only tolerance you get is from bonus, has to be "perfect" no such thing, so they give you bonus for the small amount of error. If not show us a pic of what you mean

you nailed it KIRBSTER and Wes Cisco
Thank you guys

[Cumofo]

If everything I just typed reads like gibberish to you, go to your supervisor and tell them you need an introduction to GD&T class ASAP.

HTH & ymmv.
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I feel more comfortable relating the social and philosophical ramifications due to the influence of Die Antwoord on the cerebral cortex of right brained CMM Programmers in North America with you.