Knot
thingiverse
We're crafting a hollow version that can be molded with silicone, intending it as a dog chew toy, since our pup favors gnawing on hands above all other available chews - after thoroughly destroying numerous others already.\nAdditionally, I've attached the SolidWorks file for anyone who might find it useful.
Download Model from thingiverse
With this file you will be able to print Knot 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 Knot.