I used this code from @DanielPiker, posted here:
To produce very different code that is fast and looks accurate.
Triangular Blanket Extrusion_2023Aug28a.gh (49.3 KB)
As an afterthought, I added back components I didn’t use (yellow group at the bottom) that shows “dihedral angles” between faces, which range from -32.934998 To 17.201252 degrees with an average of -1.705997 degrees. The sorted list shows quite a few that are ±5 degrees or more.
I also modified the ‘“unroll” / layout’ group to use a grid:
P.S. Come to think of it, those “dihedral angles” in the yellow group are angles between face normal vectors so miter angles would be half of those values? The range is -16.5 To 8.6 degrees with an average of -0.853 degrees?
Triangular Blanket Extrusion_2023Aug28aa.gh (46.8 KB)