Lazy klein bottle (3.1)
Added 2022-03-29 05:39:09 +0000 UTCKlein bottle with a couple of nodes, constructed from a droplet-like curve then adding a cap.
The initial idea comes from the following article (figure 9.)
https://www.ams.org/journals/notices/201208/rtx120801076p.pdf
![개성인쥬스[pingkypen]](https://xaiju.com/istorage/106895.jpg)
