*NANO* All In One 3D printer test

** Just when you thought that every possible way of calibrating your printer had been created, an entirely novel and unique method arrives! **

This isn't it, though. This claims to be neither novel nor unique, and is instead a cover version of [MICRO All In One 3D printer test](https://www.thingiverse.com/thing:2975429)

This test print is designed to be fast and small, particularly focussed on the tests that are useful for tuning new filament parameters (temperatures and cooling):

* *Overhangs*: The numbers on the arc are the angle (in degrees) from vertical. You can use this to help determine what overhang level you need to think about adding supports to you print to get good output
* *Bridging*: The bridges tucked underneath the arc help determine whether your printer is able to bridge between two points well. Lookout for sagging or droping here and use it to tune things like bridging speed and part cooling
* *Stringing & Retraction*: The small square towers (and also the