modular stackable shoe rack

My stackable, modular shoe rack consists of four different main parts.Top Part as the ending layer for your favorite pair of shoes to be presented.the middle (Backbone) part wich can be multiplied as many times as you like in form of two different print profiles. - small one with a height of 125mm for lower shoes- higher one with a height of 175mm for higher shoesthe bottom part that leads to the diagonal secure stand.the connector is able to stick multiple towers horizontally together and leads to extra stiffnes.all parts can be assembled intuitvely according to poka yoke and lock into place using pre-tensioned elements.to loosen the parts you just need to pull the flap softly and slide the parts apart.just choose the parts by using the 5 printing profiles. the shoe rack does not require any supporting material. For further developement i planned to design elements wich can be placed in the inside of the segments tubes and can be connected in the inside by using a metal pipe. this sch