Venting pipe hat for 75mm drainpipe

This is an air venting pipe hat for 75mm drainpipe. Can be used e.g. in water well breathing pipes as an hat so that rain water wont get in to the well.
This is intended to be printable so that no supports are needed. I have printed this only on 0.8mm nozzle.

Measurements are subjected to be changed in future versions and also better scalable to different sizes of pipes e.g. 50mm,75mm, 100mm and 120mm.