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True Position Composite Feature control frame

Wanting some advice on Alignment. I have a part with 5 straight in line holes, the top is a datum. The composite feature frame call for a TP .8 to AD, I created a line between all 5 holes then rotated to that line and set the axis on the datum

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  • Correct, but when setting up the composite feature is what I'm questioning, I level to A then set the XY to Datum D? B is the centerline of the part


    Well "B" can't be some Random Line in the middle of the part. It has to be some kind of feature, I hate when Engineers do this, you can't just make up a imaginary centerline. Anyways to answer the question at hand because of the composite, again not seeing the hole picture, Is there anything to get you to the center of the part? 2 outside walls? Maybe? and call it out to the center and call it "B". "B" is disposed of, on the second part of the composite, this allowing each of the 4 holes to Rotate freely, but if you are using Legacy, then you are tied to the alignment, unless you specify the Datums "A" and "D"
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  • Correct, but when setting up the composite feature is what I'm questioning, I level to A then set the XY to Datum D? B is the centerline of the part


    Well "B" can't be some Random Line in the middle of the part. It has to be some kind of feature, I hate when Engineers do this, you can't just make up a imaginary centerline. Anyways to answer the question at hand because of the composite, again not seeing the hole picture, Is there anything to get you to the center of the part? 2 outside walls? Maybe? and call it out to the center and call it "B". "B" is disposed of, on the second part of the composite, this allowing each of the 4 holes to Rotate freely, but if you are using Legacy, then you are tied to the alignment, unless you specify the Datums "A" and "D"
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