Preface - Totally new to 3D printing. The only problem I had with the design was the main nob would not fit the rotary encoder (probably a printer issue). Other things to note would be, possible trouble finding the correct RJ45 female jacks, trouble finding the small nuts to sink into the recessed holes on the bottom plate, and getting everything to fit into the compact space. Overall, the design is very good, and once you get everything inside, your electronics fit nicely with a solid finished feel.