Hello Frineds,
There is a question here : when we have 3 target area for datum-A, ( 3 circles)on drawing and there is a flatness call for datum-A as well ( all points are in same level, actually datum-A is flat plane). target datums for A are just small areas of plane. I have used those 3 zones for alignment ONLY but to measure Flatness I have taken more points outside of Datum Zones. otherwise the part functioin will be absolutely affetced ( if you leave the Plane and only conside 3 zone for target A). Some body say, NO, we have to only measure flatness by using the Target Area points only. I do not belive so, what you think?
Thank you
There is a question here : when we have 3 target area for datum-A, ( 3 circles)on drawing and there is a flatness call for datum-A as well ( all points are in same level, actually datum-A is flat plane). target datums for A are just small areas of plane. I have used those 3 zones for alignment ONLY but to measure Flatness I have taken more points outside of Datum Zones. otherwise the part functioin will be absolutely affetced ( if you leave the Plane and only conside 3 zone for target A). Some body say, NO, we have to only measure flatness by using the Target Area points only. I do not belive so, what you think?
Thank you

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