This design was created using Hypatia Studio's Celtic knot creator. While not exactly a Celtic knot, it illustrates the ability of the app to make designs with interlocking parts. Because the design has separate pieces, it can only be 3D printed in plastic materials.
Do you find this design interesting, but not quite what you are looking for? Or are you inspired to make something of your own? You can load this design into the Celtic Knot Creator by clicking here, and then customize it and make it your own! You can do as little as tweaking its size or shape, or as much as completely redesigning it. You can then upload your customized version to Shapeways and order your own, one-of-a-kind piece.