Stained Glass Rack

This rack is designed for storing hobby panels of Stained Glass. The panels shown in the pictures are approximately 19.5 x 30 cm, and the rack is perfectly stable. Each slot is 5mm wide, allowing for fairly thick pieces of glass to be stored, and there are a total of 17 slots. I designed this with strength in mind, so I did not make any compromises for the amount of filament used; it comes in a little over 400g, but that's well worth it to make sure that the glass is stored securely. I have tried loading more panels at the back of the rack and on its ends to try to destabilise the rack, but it holds firm. With this being a larger model, it may warp if printed on an unenclosed printer. I was lucky enough to print this on a warm day, so the temperature in my office was above 30 °C, but I could see the large base being susceptible to lifting. UPDATE : I gave one of these to my stained glass tutor to stress test the design - I'm a hobbyist so my racks are in very light usage wherea