Plain side hexagonal antiprism

[Brimstone]

I was organizing my old models and found one I don't remember having folded, it's a plain side hexagonal antiprism box, folded from a square and based on a 60 ° triangle grid slanted 15 ° from the vertical.

The one I found was not very well folded and now I can't find the references or an elegant way to close it.

So does anyone know the author of this model?

[Gerardo]

Didn't Chris Palmer teach something like that when he was in Bogota?

[Brimstone]

Didn't Chris Palmer teach something like that when he was in Bogota?

Maybe that's where I got it from. Thanks.