stackable screw boxes

a set of stackable boxes for screw and other tiny miscellaneous item. contains one bottom, one cover, and one or more stackable bodies which can be print in multiple and stacked together for more storage space. the original size of the model is about 6cm in diameter. one can scale it up if a bigger single storage space is needed. however due to the lock machanism, one must scale the whole model rather than on X-Y plane only, to keep the proper functional. the profile is provided in 3 plates, which is the bottom, body and the cover, so one can print them in different amount or color.