Hi,yes, I was just thinking that it looked like a cube with two opposite
corners cut off. I believe they call this chopping off corners as a
"truncation": https://en.wikipedia.org/wiki/Truncation_(geometry)
The only model I know would be David Mitchell's Columbus cube. I have made
something similar with business cards. You can adjust the diagrams to truncate
two corners instead of one.
Third picture from the top:
https://www.origami-resource-center.com/business-card-origami.html
Diagram:
https://www.origami-resource-center.com/business-card-columbus-cube.html
David Mitchell's book (Columbus Cube on front cover):
https://www.amazon.com/gp/product/189961818X?ie=UTF8&tag=origresocent-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=189961818X
Diana (If David is on this list, I love your work!)
