The hinge pin housings are directional. They need assembled in the correct orientation to hold the lid up at the correct angle when opened (110 Degrees). The pins, housings and flap all need to be assembled then housings glued onto the top of the box, due to pins being non-removable from housing once assembled. This makes for a very strong hinge point.
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The author remixed this model.
This box was based on the Small magnetic box (140x90). Lengthened the width by 10mm to fit specific wipes (140x100). Made compatible for 8x2mm round magnets. Walls down from 3mm to 2.6mm. Made internal geometry changes to add more space to the body. Made wipe opening on lid much larger. Changed lid geometry to not have a groove. Changed hinge body to hold lid up at 110 degree angle. Changed from using filament as a hinge to a larger non-removable printed hinge pin.