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Recent content by courtjester140

  1. courtjester140

    Isometric Piping Layouts [Software?]

    Hello All, I'm currently drawing up isometric piping layouts for a plant relocation. I feel like there should be a simple CAD solution to this to make things a lot more "professional" looking, and make it easier to modify layouts. Does such a software exist, that is preferably free? I was...
  2. courtjester140

    "Per Unit Basis" For Roundness?

    pmarc, Thanks, I missed that post. I've always considered Y14.5 a concrete standard, for which there was no independant interpretation or modification allowed. Here is what I have. It follows the same format as the "per unit basis" format for flatness, so it doesn't deviate too much from...
  3. courtjester140

    "Per Unit Basis" For Roundness?

    Based on the discussion here, is it safe to assume that there is no existing callout for a roundness check on a "slice" of a circular component? If not, I'm going to have to modify the actual machining process, which is something I wanted to avoid.
  4. courtjester140

    "Per Unit Basis" For Roundness?

    All, I should clarify that the concern is bumps in the radial direction, not axial. Inspecting a component, that's where these bumps come from. Really I'm just having trouble putting this on a B/P. Even though I say that a radial direction is my concern, that doesn't mean that I can omit the...
  5. courtjester140

    "Per Unit Basis" For Roundness?

    pmarc, I don't have the drawings in front of me since I'm at home at this point, but attached is a finely crafted piece of art from MS Paint that illustrates what's going on. The intent here is for the softer graphite to conform to any imperfections in the shell. The back surface is bonded...
  6. courtjester140

    "Per Unit Basis" For Roundness?

    Madhu, My mistake, I had concentricity in my head while writing that. Surface finish won't solve the problem. The bulges would still be there, but with a smooth surface. The magnitude of surface finish compared to the tolerance zone doesn't compare enough. If there are no "per unit basis"...
  7. courtjester140

    "Per Unit Basis" For Roundness?

    Thanks for the reply! Circularity or concentricity would be fine, except I would need to use a very very tight tolerance to prevent any major bulges. I'm looking for something that looks like the attached image. I'm sure this doesn't exist, but maybe there's something similar that I can use...
  8. courtjester140

    "Per Unit Basis" For Roundness?

    I have a problem with press fitting a circular component into another circular piece. They need to be as flush as possible, but I'm not sure how I can control it most effectively. I'll try to explain my problem as simply as possible. Suppose I have two toilet paper rolls (and lets assume...

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