To make this tea box you will need to print all the files in your 3d printer. Firstly place the levers in their position, then join the side bodies with the center box piece, placing some glue in the holes where the rods of the sides fit. then join the top cover with the main box with a 1mm diameter aluminum spear. then put a cloth tape between the cover and the internal box. the measure of the tape have to be taken with the top opened and the inner box up, then put it at the position of your preference