The idea was to build a Spit 3-based Cinewhoop with proper aerodynamic ducts and not simply prop guards. After the experience of setting up the Squirt V2 I thought it would be awesome to have something way smaller but with the same flight characteristics as a Squirt.

Compared to many other smaller cinewhoops, I believe Fullspeed RC's Turbowhoop is the only one to have aerodynamically-designed ducts similar to the Squirt, which should provide extra lift in addition to safety from props. I didn't like the 4K BNF version so decided on building from scratch.

Printed the ducts in TPU because PLA/PETG just doesn't stand up to small impacts/crashes
https://www.thingiverse.com/thing:3792952
Designed my own antenna mount, available here
https://www.thingiverse.com/thing:3847767

Flies like a dream after tuning. Eachine Nano heats up like a MF.
185g AUW with 450mah 4S battery.