Make a closed spiral sketch in Inkscape. Import and model it in Design. Analyze in Meshmixer and slice in MakerBot Desktop. Then 3D print it.
Inkscape is a free vector drawing program. Download it at https://inkscape.org/en/download/
Drafting, Modeling and 3D Printing with Lydia Sloan Cline
Hand drafting for Interior Design, SketchUp, Autodesk 123D and MakerBot
Make a closed spiral sketch in Inkscape. Import and model it in Design. Analyze in Meshmixer and slice in MakerBot Desktop. Then 3D print it.
Inkscape is a free vector drawing program. Download it at https://inkscape.org/en/download/