Printable filament

Just got my MMU 2.0 for Prusa I3 MK3.
It allows you to print other objects as purge block.
So I want to make something useful out of the purge block.
What would be better if we can reuse the purge block?

This is just a simple coil with hexagonal cross section.
I fine tuned the size and pitch so that it is printable, separable and reusable.

I suggest you try the 4 loops first to see if it works for your printer.

My setting:
Nozzle 210C (prefer low temp.)
Bed 60C
Perimeters :3
In