kiss box - kiss to open

The idea behind that is a bit stupid, and also quite simple (and I emphasize that to refer to the KISS principle: Keep It Simple & Stupid): The lid needs to turn to open (twist lock), but sliding bolts inhibit that. Kissing the lid, i.e. sucking a bit of air from the small hole, pulls those bolts back and allows twisting and opening the lid. So this is also a bit of a puzzle box - though it's not very hygienic to let lots of people try… Might also usable to impede kids opening it.

Since some friends had problems opening it at first even shown the method, here's the easiest way: Put the box on a table, give a kiss to suck some air, then avoid shaking the box, but twist the lid (ccw), then open. The bolts can be jammed/pinched in place if you twist the lid to its ccw stop (there's a bit of play) and prevent them from sliding back, so leave the lid more or less in the middle of it's rotational tolerance/play before the kiss. It is also possible to open the box in any other orientation by ‘twist-while-sucking'.

Printing: The bambu slicer 3mf file allows printing all parts at once or body an lid separately if you want them in different colors. Other sizes are available as STL. If you use STLs: No special settings, no supports. I do recommend fuzzy skin in the main body (outside only) for a nicer look-and-feel. I also used octagram spiral as bottom infill. If you want to have a different color for the lid, split into objects and right-click the part you don't want to print right now and uncheck 'printable'. The dimensions given in the file names are inside diameter (D) and inside height (H) in millimeters.

Assembly: See image. Make sure the sliders can easily move in and out. This is important! They should easily slide in and out by gravity when holding the lid at an angle. If not all sliders do, the lid might not open or not really close.