The Nozzle Revolver

I bought the e3D Fun Pack of nozzles to experiment with different sizes but got frustrated with the little tin they come in - there's no hole for your original 0.4mm nozzle and you need to check the nozzle for size every time you switch. It's also easy to forget which nozzle is currently installed if you haven't used the printer in a while. 

The Nozzle Revolver has seven slots for each of the nozzles in the fun pack plus your 0.4mm nozzle. Keep it on the little stand next to your printer and it doubles as a nozzle size indicator. It also has a very satisfyingly clicky detent to keep it in position: https://imgur.com/a/EUxvPV5

Print in your preferred filament, ideally at 0.2 mm layers. If you include a colour change on the last few layers of the base part, the size indicator will be much more visible. I've already included the colour change for you in the pre-sliced files. Pre-slicing was done on PrusaSlicer 2.3.1 win64 using the default settings for an i3 Mk3s. 

Printing either the base or the cover out of PETG and the other piece out of PLA will help reduce stick-slip movement or squeaks.

Happy printing!