Print with multiple locations of a single feature...now what? - Page 2
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  1. #21
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    Quote Originally Posted by Derek Smalls View Post
    By accepting the print and taking on the job, you acknowledge that you have the needed info to make the part correctly.
    At what point do you continue to check and verify? I make parts for some companies where I get a 3' x 4' blueprint with "the part" I need to make over in the corner along with all the mating parts and components scattered around the sheet. If its a shaft do I verify the diameter is correct for the Bronze bearings bore? Do I check to see when assembled there is proper end play...verify the cotter pin hole does wind up in the castle nut. Do I make sure the Nut threads are same as shaft threads. Or do I just make the shaft as shown in that one view?

    ...and to your point. I did check the print to make sure I had the information to make the part correctly. Aside all the other features and steps, for the feature I needed a location, size and tolerance for a feature...it was there...Twice.


    Quote Originally Posted by Derek Smalls View Post
    but by not catching the improperly dimensioned drawing, he DID inherit it. Saying you didn't look at the print closely enough doesn't really hold water.
    Kinda like if you buy a piece of property without a clear title. It's not your fault there is a lien on it, but it is your problem! You should have checked better.
    Who pays for the Title search? The buyer, not the seller.




    In any event, turns out this was a Revised Print. They moved the hole in one of the views not removing the old view and dimensions. They also failed to document the change in Rev box. Parts can be used.

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  3. #22
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    Quote Originally Posted by SIM View Post
    In any event, turns out this was a Revised Print. They moved the hole in one of the views not removing the old view and dimensions. They also failed to document the change in Rev box. Parts can be used.
    The phrase "The devil is in the details" has never been true-er.

    Also, revisions are sometimes given to detailers, not a full fledged
    designer.

    A money saving move that comes back to bite them.

  4. #23
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    Parts can be used.

    Originally "Parts will never werk!"

    After it is determined that it's their screw up:

    "Well, yeah, I guess we can make'm werk...."




    Who'da thunk?


    ----------------------------------

    Think Snow Eh!
    Ox

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  6. #24
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    Quote Originally Posted by Ox View Post
    Originally "Parts will never werk!"

    After it is determined that it's their screw up:

    "Well, yeah, I guess we can make'm werk...."




    Who'da thunk?


    ----------------------------------

    Think Snow Eh!
    Ox
    "Variable integrity"

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  8. #25
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    Quote Originally Posted by SIM View Post

    ...and to your point. I did check the print to make sure I had the information to make the part correctly. Aside all the other features and steps, for the feature I needed a location, size and tolerance for a feature...it was there...Twice...

    In any event, turns out this was a Revised Print. They moved the hole in one of the views not removing the old view and dimensions. They also failed to document the change in Rev box. Parts can be used.
    And that is the reason for only showing any dimension ONCE... when it's revision time, it is very likely only one will be updated. If there really is a good reason to show dimensions in a second view, one should be labeled as a reference dimension (REF.) You obviously work to the real dimension. Not to belabor the point, as I'm sure you will never forget this lesson, but any time a feature is dimensioned twice on a drawing, it is a clusterfuck waiting to happen, and you need to confirm which is the REAL dimension.

    Dennis

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  10. #26
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    Quote Originally Posted by Modelman View Post
    And that is the reason for only showing any dimension ONCE... when it's revision time, it is very likely only one will be updated. If there really is a good reason to show dimensions in a second view, one should be labeled as a reference dimension (REF.) You obviously work to the real dimension. Not to belabor the point, as I'm sure you will never forget this lesson, but any time a feature is dimensioned twice on a drawing, it is a clusterfuck waiting to happen, and you need to confirm which is the REAL dimension.

    Dennis
    Yup, And I made a mistake as of late by calling out the material size in the parts list.

    Now every part (sheetmetal in this example) has a small side view to show the
    thickness. Only the material spec. is in the Parts list.

    When I have to change the thickness in the model, it will update automatically
    in the drawing view, not if it was in the text typed into a parts list.

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  12. #27
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    Quote Originally Posted by Ox View Post
    Originally "Parts will never werk!"

    After it is determined that it's their screw up:

    "Well, yeah, I guess we can make'm werk...."




    Who'da thunk?


    ----------------------------------

    Think Snow Eh!
    Ox


    Interesting how that can happen.

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  14. #28
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    Default Contract Review.

    In our shop, per AS9100, we are obligated to do a thorough, multi-disciplinary contract review to make sure we understand and can meet all customer requirements. We are obligated to seek clarification if the information is missing or conflicting. We are obligated to verify every feature, dimension and note in a complete First Article Inspection Report for new parts. We most likely would have caught the error before we made a chip. We surely wouldn't have shipped it to the customer.

    We do, of course, build QMS compliance in to our cost structure.

    I'm glad it worked out for you.

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  16. #29
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    We do, of course, build QMS compliance in to our cost structure.


    --------------------

    Think Snow Eh!
    Ox


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