Hinge 1 x 2 Locking between Hinges 1 x 4 Angle

angle-studtilt-40 angle-studturn-40 partcount-total-8 size-8s-5s-5p

Brick Special 1 x 4 with 4 Studs on One Side Hinge Plate 1 x 2 Locking with 1 Finger On End Hinge Plate 1 x 2 Locking with 2 Fingers On End Hinge Plate 1 x 4 Swivel Top / Base

Strengthened angle

Péter Ittzés ( 2015-07-29, flickr.com )

The angle is a bit smaller than 45 degrees (so it’s technically forced). It’s very sturdy. You can also use 2×1 plates with clip and handle if you want.