Yet Another Kossel Magnetic Carriage

This is a remix of the Kossel Magnetic Ball Stud Carriage (https://www.thingiverse.com/thing:932959) by Tim Watson (aka wittmason), which is in turn a remix of the Kossel Mini Spring String Effector and Carriage (https://www.youmagine.com/designs/kossel-mini-spring-string-effector-and-carriage) by Forerunnert. It makes the following changes:

* **Ball stud distance** -- Tim Watson's version placed the magnetic ball studs 48.4mm apart. I provide several variant .stl files for this design, with