One of my favorite designs, back for the Thangs #throwback contest! A print-in-place treasure chest with a fully functioning lock (although not very secure)!
Perfect little box for Halloween, tabletop games or little trinkets!
Printing tips: 0.2mm layer height is fine. The model is already in the optimal orientation, and no supports are needed!
If you need it bigger, it should scale up just fine!
After printing, carefully bend the lid and loosen the hinges, breaking any possible z-seam blobs inside. Then check the bottom of the chest and the lock latch; run a fingernail or some other thin part along the latch edges and slightly push apart to loosen any fused z-seams. You can use for example a flat screwdriver and push the latch from the opposite end of the larger gap to loosen it finally. It's better to make sure the latch is free before twisting the key in the lock and possibly breaking it inside.