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Cant unbend SMP

Discussion in 'Using Alibre Design' started by anson, Oct 30, 2019.

  1. anson

    anson Member

    I have done many sheet metal pipes like this one, and not run into a problem. Now suddenly this one can't be flattened. I couldn't figure out what is different.

    Attached Files:

    Jake_Steidy likes this.
  2. DavidJ

    DavidJ Alibre Super User Staff Member

    Tweak sketch 4 so that it leaves doesn't quite chop off all the top - adjust so the point of the triangle is just above the end point of the vertical edge.

    To be flat patterned there has to be at least a tiny flat tab in the SMP - if you start to eat into that at an angle, flat pattern can fail.
  3. idslk

    idslk Alibre Super User

    Hello Anson,
    different approach (and sorry not your measures...)EDIT:have corrected the measures and updated the file;)

    Attached Files:

    Last edited: Oct 30, 2019
    anson likes this.
  4. HaroldL

    HaroldL Alibre Super User

    Use the CUT tool in Sheet Metal. It will allow your part to flatten. The difference is that Sheet Metal Cut will make the cut Normal the the sheet surfaces. Extrude cut does not so the edges are not perpendicular to the surfaces like sheet metal cut does.

    Sheet Metal Cut.png
    anson likes this.
  5. anson

    anson Member

    Thanks for all the tips. Will give it a run.

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