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  1. 2JL

    How do you GD&T on interface drawing when part datums are no longer available?

    Hello everyone I think the question stated above said it all but a little backstory anyway: We are about to provide to our customers interface drawing to depict maximum outline, mounting points and other specifications of our finish products. Until now the idea was to use a lot of reference...
  2. 2JL

    Least bad of two options: Circular edge or Cone as tertiary datum?

    Hello Everyone I am currently dimensioning a part machined from a die casting and I find myself in a peculiar situation where I need to make a choice between two bad options. I need a tertiary datum to ensure that a pattern of threaded holes is in a correct angular alignement (no precision is...
  3. 2JL

    DIN 32711-1 Trilobe specs for shaft diameters smaller than 14

    Hello Is anyone familiar with DIN 32711-1? We are about to order a copy and I would like in advance to know if it contains specs for shaft diameters smaller. It would be stupid for me to wait few days to have my request processed and the PO approuved to find out the specs I need are not...
  4. 2JL

    Stupid counterbore and interupted chamfer questions

    1- Is there a preferred way to callout counterbored holes? I mean, should the callout arrow be on the hole (the smallest) or on the counterbore (the bigger) instead?. The 2009 ASME standard seems to lean towards the later...
  5. 2JL

    Bidirectionnal position tolerance, rectangular coordinate

    Hi everyone Is it possible to use the scheme described in figure 7-28 2009 standard without a tertiary datum? Attached is a sketch of what we are planning to do. The hole is a locating feature and basically we only need to be really tight in one direction...
  6. 2JL

    Dimensioning a single-ended slot

    Hello Everyone I know that the topic of slot dimensioning has been discussed a lot around here. However I didn't find much about single-ended slot. I always struggle with this particular case. Most of time, profile tolerance is the trick but not in this one. Attached is a sketch of what I am...
  7. 2JL

    GD&T tolerancing of a cone using multiple segments frame

    Hello everyone! I am new to this forum though I spent nearly a year learning from valuable discussions around here. For cones, I usually stick to a single profile tolerance but this time more control is required to better describe the functionality of the part. Attached is a sketch of what we...

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