Owl Box - spring closure - gear hinges

Unique box with lid for storing jewelry or use as a gift box. Decorated with a flying owl in the Art-Deco style. The lid latches closed with three flexible spring latches. Most parts just snap together. Though the special hinge will need either tiny screws or bits of filament to assemble.

Printing

Layer height: 1.8mm
Nozzle: 0.4mm
Infill: 10%
No supports needed.
I recommend a 6mm+ brim for lid and little brim for the small parts.

The lid must be printed on-edge with the owl upside down for good quality surface detail. On a bed-slinger it should be oriented in the Y axis direction to prevent wobbling when it gets tall. There is also a version of the lid with braces and tabs to help prevent wobbling and warping.

Assembly

Besides the hinges, everything snaps into place.

To assemble the hinges you can either use tiny screws or bits of filament (the holes in the hinges are 1.75mm diameter). How to use screws seems should be obvious, here's how to assemble with filament:

Insert a length of filament through the holes of the hinge parts. Arrange parts A and B to form a 90° angle, the gears will mesh in only one orientation. The brackets (parts C) go on either side of parts A and B. 

Melt the ends of the filament with a 3d pen or soldering iron. Make sure the sides of the brackets are flat, cut off any of the melted filament that protrudes out of the bracket's holes.

Box assembly

Insert the three latch springs into the holes in the lid. The must go in all the way and click into place.

Insert hinges into the slots in the lid first, then into the box. If the fit is too tight, trim the little ridges highlighted in this image. It should go all the way in and click into place.

Next line up the bottoms of the hinges with the holes in the box and slide them in. They should also click into place.

The box is complete. If the lid doesn't stay closed then the latch springs might not be inserted all the way.