Continuing to explore the work of Rinus Roelufs
, I had some progress with the selfintersecting Moebius band.
The holes that permits the surface to weave into itself are now circular. The definition is not all that parametric yet, meaning you can only change the size of the moebius, the size of the holes and whether the moebius band should be twisted once or three times.
This last part, that you can control the number of twists is thanks to Lorenz Lachauer
. This possibility never occurred to me before, but it's really cool.