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3D Printing Forum Hollow parts?
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Related

Hollow parts?

Workshopshed
Workshopshed over 9 years ago

I was following a discussion on a blog about cable tidies and one of the comments got me thinking about 3D printing.

 

http://toolguyd.com/stacks-metal-cube-cable-stops-kickstarter/#comment-711908

 

The idea is to have a hollow part and fill it with shot to make a heavier piece. I was wondering if there was anything specific that was needed in designing the part. I'm guessing that closing up the top won't be much of an issue as the filament will be partly supported by the content. I was wondering if the slicer would be ok with it and correctly hollow it or if it would try to fill it back in. I'll likely just use OpenSCAD.

image

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  • Robert Peter Oakes
    Robert Peter Oakes over 9 years ago +3
    I agree with IP, it is not necessary to leave it to the slicer, see this example of something I did for my Kitchen Full BOX and lid Hope this will help
  • Paul
    Paul over 9 years ago +1
    I think you could draw the object solid then in the slicer set the infill to 0%. It will print hollow. Though the wall thickness could be less than you would like?
  • Workshopshed
    Workshopshed over 9 years ago in reply to Paul +1
    Yes, that could work too, I can configure it with a thick wall size and possibly use the rectilinear fill which leaves lots of space for adding weights but would keep the strength.
  • Robert Peter Oakes
    0 Robert Peter Oakes over 9 years ago

    This can certainly be done with Autocad3D so im sure openScad can do it too, you can also have the LID as a seperate part and simply Acetone glue it in place for a perminant fit

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  • Workshopshed
    0 Workshopshed over 9 years ago in reply to Robert Peter Oakes

    Cheers, may be I'm just overthinking it. I'll just give it a go and see how it turns out. If there are issues I can always go for a lid approach or possibly a very small hole in the bottom.

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  • Paul
    0 Paul over 9 years ago

    I think you could draw the object solid then in the slicer set the infill to 0%. It will print hollow. Though the wall thickness could be less than you would like?

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  • Workshopshed
    0 Workshopshed over 9 years ago in reply to Paul

    Yes, that could work too, I can configure it with a thick wall size and possibly use the rectilinear fill which leaves lots of space for adding weights but would keep the strength.

    image

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  • ipv1
    0 ipv1 over 9 years ago

    IMHO i would not leave anything upto the slicer. There are two ways about going into print for an object.

    1. For a hollow object, just split it in two and then shell both the halves. Then print them as separate objects. Make sure you add some notches to align the printed halves and then use super glue.

    2. For hollow grill like objects or the like, export an STL and then add supports in mesh mixer. It allows you to do supports, and all that stuff.

     

    Hit print, fingers crossed and tongue at the right angle... image

    Bam!

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 9 years ago

    I agree with IP, it is not necessary to leave it to the slicer, see this example of something I did for my Kitchen

     

    Full BOX and lid

     

    imageimageimageimageimageimage

    Hope this will help

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