How the self-intersecting loop is created with holes.
Model credits: Yang Bevis from Weekly challenge group.

Good job.
I have also created and published one that deforms with parameters before.

I have also created and published an add-in for Fusion360 that can create similar shapes.
https://github.com/kantoku-code/Fusion360_Two-turn_Mobius_strip
Thank you kantoku.
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