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Thread: More than One Surface Finish Symbol on Drawing

  1. #1
    Associate Engineer
    Join Date
    Jul 2020
    Posts
    2

    More than One Surface Finish Symbol on Drawing

    Hi everyone,

    First post, be nice please

    I came across a drawing which shows 3 different surface finish symbols, 2 of them are within brackets, as well as specific points on the drawing. Please see attached.

    I don't have much experience with surface finishes, but I thought it is normal practice to have 1 general surface finish value, different finishes can be specifically noted on different areas of the part.

    Thanks.
    Attached Images Attached Images

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
    Posts
    2,338
    Where an arrow or a clear drafting association with surface is given - that's the surface roughness required.

    For those surface roughness specifications within the brackets - contact the engineering drawing originator and ask for clarity.

    It's not clear to me either.
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  3. #3
    Associate Engineer
    Join Date
    Jul 2020
    Posts
    2
    Thanks for your feedback.

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