This is a rotor designed to be connected to a 1000kv drone motor (linked to a 3S lipo battery) to spin 8 standard 1.5 ml Eppendorf tubes.

The motor in reality ends up spinning around 8000 rpm when fully loaded, producing a reasonable 5000g of force (https://www.sigmaaldrich.com/US/en/support/calculators-and-apps/g-force-calculator). It ends up using something like 1.5 amps (about 17-18 watts).

Make sure to tighten the bolt that holds the rotor onto the drone motor, or else the rotor will not spin. The motor must be anchored to a solid surface in someway to ensure it itself does not spin. Additionally, start at a low speed and slowly build up, and run any tests behind shielding to avoid injury.

I used a raspberry pi 4 for control, though and microcontroller with analog GPIO output will work. I used a modified version of the code from this tutorial: https://www.instructables.com/Driving-an-ESCBrushless-Motor-Using-Raspberry-Pi/

Bambulabs

Bambu X1C

No

No

0.2mm

5-20%

Higher infill will result in a lower rpm, and higher motor load. I do not recommend going over 15%. While theoretically 5% should be fine, in reality it may be to weak, and may shatter. I used 10%, if you are experimenting, please do so behind a shield of some kind to avoid injury.

If you decide to make modifications, note that the tube holders and the point were the drone motor connects to the rotor are the most likely failure points.

I also plan to test this with my ender 3v2 at some point (mine was broken when I initially printed it, so I ended up printing at school).