Parametric Circular Air Trimmer

**Customizable Air Trimmer**

Suitable for holes starting at 30mm. I've used this design to regulate the airflow of a 3d printer enclosure. Perfectly circular holes are easy to make using a cheap hole saw set.

[Link to video](https://www.thregr.org/~wavexx/tv/VID_20181221_163722_r.mp4)

The aperture with this design is always 0-48% of the hole size (50% for the blades minus the centerpiece), *irregardless of the number of slices*. The cap needs to be pressed into the support until it clic