Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5322584. You will need 4 of these neoprene drawer cushion pads. This is a pack of 300 but I use these in so many of my designs and they work wonders for getting things to fit snuggly together. They go inside the holes on the back of each part. https://www.amazon.com/gp/product/B081QSH6KL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1