About this 3D model

My design for an amp style deej mixer. Yes its beefy xD. I used ruthex M4 threaded inserts(No.1) for mine, but i also uploaded a version with modeled M4 threads(No.2) and holes to cut the M4 threads with a screw or tap(No.4). The arduino holder is meant for an arduino nano, with a "mini usb" plug. I used the one from AZDelivery on amazonhttps://www.amazon.de/gp/product/B078S8BJ8T/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 Deej software and arduino sketch: https://github.com/omriharel/deej (i didnt write the arduino script, nor the software. Thanks goes to the real creator xD)