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rgoh1-Visitor
1-Visitor
Apr 13, 2014 8:44 AM UTC
Solved

Shell doesn't work? [Newbie]

Hi guys,

I'm trying to shell this shape, but it keeps saying it fails. Do you know what I'm doing wrong?

CREO+Shelling+Problem+2.png

Btw it's the underside that I'm trying to hollow out.

Thanks

    TomD.inPDXAnswer
    17-Peridot
    Apr 13, 2014 3:31 PM UTC

    Shell will fail if the part has rounds that are smaller than the shell thickness you are trying to create. Shell really is not very smart. Move it to a much earlier location in the model tree before rounds, chamfers and holes are added.

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    6 replies

    TomD.inPDX17-PeridotAnswer
    17-Peridot
    Apr 13, 2014 3:31 PM UTC

    Shell will fail if the part has rounds that are smaller than the shell thickness you are trying to create. Shell really is not very smart. Move it to a much earlier location in the model tree before rounds, chamfers and holes are added.

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    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    Apr 14, 2014 2:27 PM UTC

    If I remember there's also some special tools now to handle these areas. Look up in the menu bar and see what the options are.

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    Mahesh_Sharma
    Mahesh_Sharma22-Sapphire I
    22-Sapphire I
    Apr 14, 2014 9:30 PM UTC

    Reuben,

    As Antonius mentioned this may occur due to rounds that are smaller than the shell thickness. For a confirmation you can reduce the value for shell to 0.2 or some smaller value. This will give an idea whether shell is failing due to self-intersecting surface creation.

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      rgoh1-VisitorAuthor
      1-Visitor
      Apr 15, 2014 9:07 AM UTC

      Thank you all for your help, I moved the shell process to earlier on in the tree and it works fine now.

      Thanks guys!

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      Dale_Rosema
      Dale_Rosema23-Emerald IV
      23-Emerald IV
      Apr 15, 2014 11:55 AM UTC

      Don't forget to mark the question as answered for those who follow behind and search on this topic.

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        ryankelley1-Visitor
        1-Visitor
        Apr 15, 2014 2:11 PM UTC

        Thanks for always reminding members to mark the question as answered, Dale. It goes a long way to helping us verify the knowledege shared here on PTC Community.

        Gold star for the day! http://communities.ptc.com/4.5.8/themes/ptc/images/status/icon_gold_16x16.gif

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