I am trying to design a living hinge for a small business card box.
Printing with layer lines parallel to folding axis yields a strong print but the hinge fails. I have tried to modify the hinge with little success and changing print orientation does not help me either.
Attached are images of the area.
Any help is greatly appreciated.
(Note: I prefer working in metric but the person who it's being made for began in imperial and wants imperial measurements)