to finish this you will need 2 x bearing 22mm OD x 8mm ID by 7mm thick - a skate bearing and bit of 8mm rod about 30mm long some copper wire 0.2mm diameter and 24 neodymium magnets 1cm by 2mm circular you can find a video of the build here
https://youtu.be/DiNRHgMnfyo

ELEGOO

ELEGOO NEPTUNE 3 Pro

Yes

0.2

25%

the bar is glued into the rotor and the cap is glued on line up the exterior square section of the cap and body before gluing