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Material Thickness with AutoFeature points

I'm measuring the material thickness on a casting with curved surfaces. I have points at the same co-ordinates on opposite sides of the material and am having issues getting the correct readings. The vectors on the opposing points are opposite, not sure if this is correct. Since these are points not along a datum so measuring parallel or perp. to them is not an option. Thanks.
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  • Based on personal experience...the most accurate way to measure thickness with a CMM:

    Assuming the 2 surfaces are relatively parallel:
    1. Create a Vector or Surface Point on Surface 1.
    2. Create a small 3-pt Plane on Surface 2 (directly opposite the Point).
    3. Dimension as a 3D Distance with the Point selected first.

    Through experimentation I have found this method to be as accurate as using a ball-nosed micrometer.
Reply
  • Based on personal experience...the most accurate way to measure thickness with a CMM:

    Assuming the 2 surfaces are relatively parallel:
    1. Create a Vector or Surface Point on Surface 1.
    2. Create a small 3-pt Plane on Surface 2 (directly opposite the Point).
    3. Dimension as a 3D Distance with the Point selected first.

    Through experimentation I have found this method to be as accurate as using a ball-nosed micrometer.
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