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Thread: Basic dim's interpretation

  1. #1
    New Member
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    Dec 2023
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    Basic dim's interpretation

    Hello and thank you in advance for looking at this drawing (attached).
    I was trying to interpret the basic dim's added to the dwg.
    +10, +1 and -1

    There is no callout other than in the notes regarding
    concentricity.

    I did not create this, nor would I place a surface finish on a
    hidden line (omg).

    Thank you,
    Lorrie
    Attached Files Attached Files

  2. #2
    Kelly_Bramble's Avatar
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    It's not clear what the box + # is meant to indicate. There is a size and taper indicated ((5 deg.) + the dia. 2.265. Dimensioning to a hidden line is basic drafting no-no.

    Best advice is to contact the engineering drawing creator and ask for a clarification.

  3. #3
    I have no idea what the boxes mean, especially since the dimensions already have a max/min format.

    Also, the geometry is over-defined. (A basic error in my opinion.) You have a taper with diameter callouts at each end, as well as a specified angle. The designer should eliminate one of them, or at least make one of them REFERENCE.

  4. #4
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    Dec 2023
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    The larger dia. is a reference dimension.
    Thank you for your comments, I was having trouble interpreting myself.

  5. #5
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    Dec 2023
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    Yeah lot's of errors, not my drawing but I will fix the mistakes.
    Thank you for looking at it!

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