This is a Remix i made, i added some thigness to the walls and more support for the PSU, also i remade the lid, this one should sit really smooth and it holds with Magnets of [2mm x 1mm].

It can only be printed on a bed of more than 9" of printing; Area i didnt cut it down because of the structural integrity.

Parts that i will be using on this (i still dont have them but the measurements are right).

ASUS ROG Strix Z390-I Gaming LGA1151 Mini ITX Intel Core i7-8700 Desktop LGA1151 Silicon Power 256GB A55 M.2 SSD CORSAIR Vengeance LPX 8GB SilverStone Technology 450W SFX Noctua NH-L12S 70mm Low-Profile CPU Cooler EVGA GeForce GTX 1060 SC GAMING, ACX 2.0 (Single Fan), 6GB GDDR5