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  • Users: JMorton99
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  1. JMorton99

    Surface Datums

    Hello, When defining datums, does defining a surface datum constrain all 6 reference planes and axis? Would my part be fully constrained by a datum simulator or would I need to define one or two more planar surfaces? What type of machine or simulator is used to define a surface datum? I want...
  2. JMorton99

    Defining Positional Tolerance of Hole Using Surface Datum

    Hello, I am new to GD&T. I have just started to read ASME Y14.5M-2009. Attached is a capture of the drawing. It is a square block that is machined out, creating 4 unique planar surfaces. On these planar surfaces there will be 4 separate holes in which replaceable bushings will be mounted. They...

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