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  1. GreenMindmn

    Datum Feature Symbol placement

    I have searched through my GD&T books and have come up short on certain situations. All per ASME Y14.5M-1994. 1) Datum Center Plane (see http://i18.tinypic.com/68j3ode.jpg ) I know that datum B would be valid in defining the center plane datum from the .325 dimension. But does datum A also...
  2. GreenMindmn

    Datum Feature Symbol

    I was taught ASME Y14.5m-1994 in college. But my company has an old set of standards. Thus is why I am trying to interpret if this datum was an ISO standard or just an old standard.
  3. GreenMindmn

    Datum Feature Symbol

    Hello I have searched the wide-wide web along with some books and have fallen short to an answer. My questions is as followed: What standard does the [-A-] datum feature follow? Meaning the dashes specifically, and if the dashes have any meaning? http://www.engineersedge.com/gdt.htm gives...
  4. GreenMindmn

    Basic Dimension with no GD&T

    Thank you everyone for all the responses. I now agree that a basic dimension is not for use in this situation. The assembly has a graphite brush and the dimensions in question do not have tolerances. The baseline is part of the carbon that varies when installed. This these dimensions are...
  5. GreenMindmn

    Balloon Standards?

    I am looking for any information if there is any on standard balloon shapes. I am unsure if they are just a company standard, or if there is a standard in the mechanical industry? I would like to know when to use part-list balloons, note reference balloons, and more if there are more. Also...
  6. GreenMindmn

    Basic Dimension with no GD&T

    Can you use a basic dimension when no GD&T is used? ie I want to use a linear basic dimension on a spring assembly in order to denote the ideal lengths. I personally would not consider this a reference dimension. Please let me know if that is unclear.
  7. GreenMindmn

    Revision table order

    To add on, the headings for the table are the lowest row in the table. EX. C B A Heading
  8. GreenMindmn

    Revision table order

    Hello, Based upon ASME/ANSI standards does the order (ascending/descending) matter in revision tables? A vs C B vs B C vs A If no what are some standard practices? In the past my company had its revision start lowest(A) at top and ascend.(Note my companies revision block is...

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