Based on the PanelDue mounting system and the Geekpi 5 inch case, mixed them together to make a Touchscreen system for my Sylph and It's prototype printer based off a heavily modified Anycubic Linear plus.
Mounted to the upper vertex of the kossel frame. note that the Geekpi 5 inch display has no DPMS so don't bother with autoshutoff or power saving. it won't work. Screen and case are designed for left hand cable runs. you can run the cables through the 2020 extrusion track and guide it down through the rails to where your Raspi is mounted.
Showing TouchUI running for a print.
use M5 Screws with an M5 nut. an M5 x 15 mm shaft should work. use m3 screws and nuts for connecting the screen back to the mount, as well as with the 2040 mount. use tslot nuts to mount it to the frame.