This was a project for E27 manufacturing and tolerances class. The scope of the project was to create and manufacture a part to enhance the use of a smart phone. Our group decided on making a modular phone case with removable pieces inspired by LEGO.
The case it self snaps onto the ridges of the phone and truly fits into the phone. This was accomplished by testing different dimensions and calibrating the 3D printer to print a small overhang to catch the ridge on the phone.