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  1. 1asdf

    Vary wall thickness relative to tube OD

    dtmbiz, The allowable wall thickness varies with the OD. Maximum thickness is desirable for manufacturability, but is limited by the ID and OD constraints. AliThePro, I may end up taking the suggested approach, it is reassuring that it is not "wrong" to specify all three ranges. In the...
  2. 1asdf

    Vary wall thickness relative to tube OD

    MJ/Everyone, I am reassured that I am not missing an ANSI method of achieving this, thanks. Hoepfully they can also contend with an equation to calculate the added wall bonus tolerance as it relates to the OD.
  3. 1asdf

    Vary wall thickness relative to tube OD

    Sorry if I am not explaining well. I use LMC and MMC in the context of GD&T, but I could have just as well stated from lower tolerance to upper tolerance. I need a lower ID constraint, an upper OD constraint, and +/- constraints on the wall thickness. I can add + bonus tolerance to the wall...
  4. 1asdf

    Vary wall thickness relative to tube OD

    I need to control the upper limit on the wall thickness as well. I would actually like to avoid any ID spec and rely on OD with tolerance as well as wall thickness with tolerance. This is because the OD and wall thickness are easy to measure.
  5. 1asdf

    Vary wall thickness relative to tube OD

    I appreciate the input, thanks. I wish I could let the wall thickness go and use only the ID and OD tolerances, but I need to tightly control the wall thickness as well. The large diameter tube is custom made, it is extruded and then expanded to meet the spec. As such, concentricity is...
  6. 1asdf

    Vary wall thickness relative to tube OD

    I wish to specify the OD of a tube with a tolerance, the wall thickness of the tube with a tolerance, but add +tolerance to the wall as the OD varies from LMC to MMC. This large tube fits inside a tube, and another tube fits inside the tube in question. I have reviewed Y14.5, but I am still...

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