I need help with the solids in Sketchup

Discussion in 'Design and Modeling' started by Kyle772, Jan 23, 2012.

  1. Kyle772
    Kyle772 New Member
    Ok well earlier today I made a cell phone case for my phone and I spent about 6 hours on it. Everything was fine until the final build of it and now when I upload it I get missing pieces everywhere and the flat areas are making odd shadow changes. I haven't made much differences since the one before it but they were precise measurements that I would rather not start over again. Is there a way to make all the problems show up in sketchup? As far as I can see it is perfect but Shapeways doesn't agree.

    I attached the design below can someone help?

    Also this is what is coming up in shapeways
    http://www.shapeways.com/model/448498/htc_mytouch_4g_cell_ph one_cover___untested.html?gid=ug
    Last edited: Mar 5, 2012
  2. underitall
    underitall New Member
    Hi Kyle772.
    I've just had a quick look at your model, and first thing I notice is that there's alot of reversed faces, I quickly sorted these but it shows a few more problems.

    One view is this, it has multiple faces overlapping:

    There is also alot of faces inside the shell that don't need to be there, you need to look inside every part of the model to get rid of unwanted parts, otherwise it will either not print, or may fall apart when printed.

    This is what I'm talking about, the face marked in red should not be there, or any reversed face inside a shell like that, and I think the yellow faces should either not be there, or must be reversed:

    For reference, the view above is just inside here:

    The model would IMO need some time spent on it to get it ready for printing, it's just a time consuming process removing unwanted faces/lines and making sure the faces are all facing the right way.

    All I did to your model was reversed the faces that needed to be, other than the ones which overlap with others.

    Hope this helps,

    Attached Files:

  3. denali3ddesign
    denali3ddesign New Member
    Hi Kyle,

    You can use this tool to help you find other problems:

    Solid inspector

  4. aeron203
    aeron203 New Member
    denali, I wanted to give Solid Inspector a try, but it doesn't work so far. I'm using SketchUp8, TT_lib2 is installed. Any ideas?
  5. denali3ddesign
    denali3ddesign New Member
    Aaron, did you make the geometry into a group or component?

  6. aeron203
    aeron203 New Member
    No, just sketched out some basic shapes and gave it a shot. I also tried it on an imported model after exploding the elements.
  7. denali3ddesign
    denali3ddesign New Member
    Ok, it only works with groups or components, so that's an easy fix! :)
  8. aeron203
    aeron203 New Member
    Ah, well there we go!


  9. denali3ddesign
    denali3ddesign New Member
    Sure, glad to help!

  10. Kyle772
    Kyle772 New Member
    Thank you so much Tom!

    Is there a simple way to reverse faces in Sketchup? I usually don't use Sketchup for being read by anything other than me so I never really thought reverse faces would be a problem. Is there a good tutorial on the details of Sketchup that would make things like this easier? Thanks!

    Also Can the inside of all the walls be completely hollow? From what I understood those had to be put into complete pieces then connected for it to work. :\
  11. denali3ddesign
    denali3ddesign New Member
    To reverse faces, just right click -> Reverse faces.

    Yeah, you want the interior of the model to be completely hollow. Think of it as a container for the 3D printed material - any geometry inside will interfere with the printing.

  12. Kyle772
    Kyle772 New Member
    Oh that was simple enough... :blush:
    Thanks ;P
  13. Kyle772
    Kyle772 New Member
    I have a lot of these lines within the walls do I have to erase every single one or will those not interfere?

  14. denali3ddesign
    denali3ddesign New Member
    Those should be deleted...its easy with this plugin: Cleanup