A large, functional and easy to print collar. The included zip has ten sets of .stl files, for neck circumferences from 11 to 19 (30-44cm). Simply measure the circumference of the wearer's neck and choose the next size up to print. The files will print easily on a bed at least 220 x 220mm. My example collar pictured was printed in copper silk PLA at the 13.5" size.

Also included is the parametric f3d file, allowing for a completely custom size diameter to be entered if wanted.

Additionally, the file contains and option to turn on a front ring as well, for attaching a leash, rope or chains. Each size includes an stl for the right side of the collar with and without the loop, so you can choose to print either or both. The feature is also easily turned on parametrically in the included fusion 360 file.

The files include a pdf with detailed instructions on how to measure for sizing, and print settings I successfully used for each part, and the minimal post-processing applied (light sanding of the sections with supports.