Wrong foldangle in apply_folding_hinges_and_snaps() wiki example.

[mizahnyx]

In the hinges.scad wiki example for apply_folding_hinges_and_snaps(), the parameter foldangle is wrong, it should be 70.53 that is approximately the value of the dihedral angle of a tetrahedron. I verified it by generating and 3d printing the solid.

[adrianVmariano]

Yeah, this is right. The angle in there is the angle between an edge and a face. The correct angle is acos(1/3)