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