Rotor for a micro portable centrifuge, for 4 PCR tubes

It is the design for a small rotor (designed to be able to accommodate 4 PCR tubes -0.2 mL tubes-) for a portable micro centrifuge.

It is easy to print (around 17 min) and it does not need support.

The design for the body of a portable micro centrifuge (it can house a tiny electric motor -USB powered-) is available in another Thingiverse entry.