About this 3D model

This should be a press fit. Shell is minimum 1,2mm thick The small / Large boxes in interchangable as long as you keep the geomitry right. Small box is organized so that alll parts are in their correct place except the row 5 in picture (they are at the bottom in correct orientation) Part number is counting from top left to right, for smalll boks: 1-2-3-4-5 6-7-8-9-10 11-12-13-14-15