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    Model "looks" solid but Sketchup says otherwise?

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    • P Offline
      Panic Button
      last edited by

      Hello there!

      I'm a bit new to Sketchup, however I have been toying around with it.

      My question is that my model "looks solid" , however when I try to use the Solid tools (such as Intersect, Trim, etc), it says it cannot be done as one of the things I'm trying to intersect it with is not a solid. It also does not tell me the volume.

      I have used the Solid Inspector tool, and see red/yellow lines, yet deleting the red and yellow lines ruins the model.

      I will use the finished model with Ponoko for 3D printing, hence the need for it to be "solid".

      Any help? 😄

      The model I have made is attached to this post. But, please ignore the small little shape (that one DOES have a volume, however.)


      Panic Button Model.skp

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      • TIGT Offline
        TIG Moderator
        last edited by

        Your model is 'quite small' with may small facets...
        Both SUp and OpenGL have a limitation on very small [and very large] facet sizes.
        They can 'exist' when scaled down later... BUT they cannot be 'made' initially.
        Anything with a side <~0.1mm will fail.
        I suspect that that the form you made has a tiny hole in it, so it's not reported as solid!
        Try remaking it x10 or x100 bigger and then scaling it down to suit - hopefully, it will then keep its facets and be regarded as 'solid'............

        TIG

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        • Dave RD Offline
          Dave R
          last edited by

          I had a look at your model. In this case I think the problem lies with the edge between the rim structure and the body. See in the green rectangle. If you pull the large flat face back a few mm, I think you'll find it becomes solid. You'll have to delete some interior faces that will be created around that rim, too.


          http://farm6.static.flickr.com/5215/5386765195_4354b75837_z.jpg

          Of course this thing wouldn't work in reality as currently drawn. That rim wouldn't be attached to the rest.

          Etaoin Shrdlu

          %

          (THERE'S NO PLACE LIKE)

          G28 X0.0 Y0.0 Z0.0

          M30

          %

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          • TIGT Offline
            TIG Moderator
            last edited by

            Dave is right.
            Volumes meeting at a common edge are not regarded as 'solid'.Capture1.PNG
            Volumes that are separate are 'solid'.Capture2.PNG
            Volumes that overlap and share a common 'internal' face are not regarded as 'solid'.Capture3.PNG
            Volumes that overlap but have no internal faces [here they were removed] are 'solid'.Capture4.PNG

            TIG

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