Knots
thingiverse
Do you ever try to describe a knot on the phone? If you don't manage to, today you can fax it. Instructions The best is to print them with supports made in a dissolvable filament like PVA (for PLA) or HIPS (for ABS).
Download Model from thingiverse
With this file you will be able to print Knots with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Knots.