This is a Control box where you can put a MKS Gen L and a Raspberry Pi 3B+ togheter under the LCD screen pannel.
I used the same idea of "Ender 3 LCD Cover Octopi Station" (https://www.thingiverse.com/thing:3434509) putting the MKS Gen L together. No usb ports to outside, since everything will be near inside the control box.
I made it in 3 parts, to be better to print, to minimize the need of supports.
The model have 4 slots to xt60 connectors and 2 slots to USB.
My suggestion to attatch the box to the Ender 3 structure is to use the "T-nut M3 drop-in rotating 2020 V-Slot" at https://www.thingiverse.com/thing:3050607.
Changed enclosure files and raspberry pi plate to better print and fit better. (v3)
Added New back plate (v2) with for 2 40x40mm fans, and 2 USB spaces (to put some raspberry pi usb extensions to the outside.
Best fit with enclosure.
Added space for "hinges" (space for a 1.75mm filament) on the bottom
Added xt60 and usb caps to fill the gaps.
Assembly: Just assembly. I tried without glue and worked.
Need all comments to make it better.
=== Working and printing ===
Just the back plate needs supports. Sugestion: Use tree soppurt from Cura.