No glue, no nuts, no screws, easy to print, nice to use tickling fingers!

To achieve the result you need to print:

side1, side2, side3, side4 - print one gear, worm - print one

It's recommended to use filament of different colors for gears and sides.

PETG, ABS, PLA - good choice for the thing filament (PLA is not so good for worm gear because it is rough)

Creality, TEVO, Prusa, Anycubic, Anet, Flying Bear, Wanhao, Reprap, Ultimaker - 100% printable with good result.

I use Ender 3 (with standard hotend 0.4) and about 1 hour to print this fidget.

You can use a thinner nozzle and layer height to archive maximum accuracy

May be you need sandpaper or nailfile to smooth edges.

You can fix the detail forever with glue if you wish.

You can also use another antistress toys I made:

https://www.thingiverse.com/thing:4855514 https://www.thingiverse.com/thing:4854632 https://www.thingiverse.com/thing:4857857 https://www.thingiverse.com/thing:4858354