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  1. softserve1020

    Primary datum axis and secondary datum plane

    Thank you both for your answers! I have attached a link below to clarify my question. As shown in the picture attached, the toleranced cylinder is indeed coaxial to primary datum axis. So, from my understanding of both of your reponses, datum axis alone is enough to constrain its degree of...
  2. softserve1020

    Primary datum axis and secondary datum plane

    Hello, I would be grateful if someone could help me to understand the following, if a cylindrical axis is permitted to shift wihtin a φ0.05mm tolerance zone in relation to the primary datum (axis) and secondary datum (plane), would it really be necessary for the existence of an secondary datum...

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