Bullet shells act as the "buckets" for the centrifuge.
Paperclips are bent to hold the shell casings, which spin out when the motor begins to turn.
A DC motor speed controller allows control over acceleration and deceleration.
A motor spinning at 2000-2500 RPM with a radius of 2 inches will develop the
600 g of centrifugal force required to separate cells in fluid suspension.
We used 1 milliliter pipettes which fit into the bullet casings to spin-down a "cell pellet"
in a pleural fluid sample however a "virtual tube" of cellophane will also work .
This project was supported in part by the Center for Parabiotics Research.
Project team members: R Siderits, J Jaworski, W Lecorchick, O Ouattara
Step 1: Finished prototype
Use the lid of the cookie tin to completely cover the centrifuge for safety.
The knob on the front of this image is the DC motor control. We used a two part plastic and a bottle cap as a mold for both the rotor head (center) and the speed controller knob.