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jferguson413-Aquamarine
13-Aquamarine
July 11, 2022
Solved

Can Shrinkwrap be made to use the existing tessellations on an imported "quilted" surface?

  • July 11, 2022
  • 3 replies
  • 9315 views

Creo8. I need to convert an outside file to an editable part. I am able to import it as a STEP, STL, or OBJ which doesn't appear to make any difference to Creo.  

 

The part in question comes in with tesselated surfaces, I think because the original file was made in Blender, and Blender outputs it's models with them.

 

I then Shrinkwrap the imported part to a new file with the ignore quilts toggled off and "10" selected as level of "precision".

 

The result is a usable editable part, but because Shrinkwrap does its own tessellation, not as tight a part as I would like - tessellated fillets not in the original file etc.

 

Is it possible to shrinkwrap or otherwise convert an imported tessellated object to an editable part using the tessallations which are already in the part without adding any others?  If this isn't possible, is there a precision setting higher than 10?

 

If what I'm asking is not possible, my solution will be to edit the imported file in OnShape to get rid of the problem areas and then reconstruct them in Creo.  And no, OnShape while doing a superb job of importing OBJ  files, won't let me edit them.

    Best answer by TomU
    @tbraxton wrote:
    • Included with all seats of Creo Parametric

    That may depend on the package.  New packages may include this option, but older packages may not.  If you don't pay extra money to convert your existing packages to the new packages (whenever they come out), you will remain stuck at whatever modules/features were included in your original package.  Unfortunately your maintenance mode (perpetual or subscription) has no impact on this.  Even on subscription you won't automatically get any new packages/modules that are released.  Just because something is included in the 'base package' today doesn't mean anything.  If it wasn't in your 'base package' when you originally bought it, you're not going to get it now without spending additional money.

    3 replies

    M
    MartinHanak24-Ruby III
    24-Ruby III
    July 11, 2022

    Hi,

    I am not sure if it helps, but you can test FreeCAD.

    See my reply (date 2015-03-11 01:24 PM) in https://community.ptc.com/t5/3D-Part-Assembly-Design/Importing-stl-files-into-Creo-Parametric-3-0-and-then-converting/m-p/289180 discussion.

      J
      jferguson413-AquamarineAuthor
      13-Aquamarine
      July 11, 2022

      Creo balks at editing a faceted solid unless it did the faceting which is probably why shirinkwrap needs to do creo-readable facets.  I fear that what I want is not possible with present software, but I thought I'd ask anyway.

       

      Thanks MartinHanek.  I did spend a bunch of time with FreeCad which is really quite good, but it's output doesn't evade the foreign facet problem in Creo.

       

        tbraxton
        22-Sapphire II
        tbraxton22-Sapphire II
        22-Sapphire II
        July 11, 2022

        Creo Freestyle has a construction from facets option. If you can get your import tessellation geometry to be recognized as freestyle facet geometry in Creo that would be an option rather than using shrinkwrap. Freestyle was built to work with (edit)  tessellated geometry.

         

        https://support.ptc.com/help/creo/creo_pma/r6.0/usascii/index.html#page/surfacing/freestyle/To_reconstruct_shape_from_facets.html 

          J
          jferguson413-AquamarineAuthor
          13-Aquamarine
          July 11, 2022

          thanks much. I'll try it.

            C
            cgherghe-213-Aquamarine
            13-Aquamarine
            December 22, 2024

            Hi John,

            I just read this post right now -- were you able to find a decent solution to this problem?

             

            I am trying to import STL / OBj files in CREO 10 and the quality of the result is dismal.

             

            Many thanks,

            Colin.

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