I wanted to mount a Reprap discount full graphics smart display on my CTC Dual printer, whithout drilling any new holes. The things i found did not fit at all.

So here is my first thing:

Its a cover that is mounted in place of the old display, and a mounting frame for https://www.thingiverse.com/thing:2368534

you should be able to use a 35mm M8 Screw for mounting, but i also added a printable bolt nut and washers. with my printer they fit a No6 Alan Key and the nut should fit a 14mm wrench, but i used an adjustable wrench for mounting.

However i would recommend to mount the display in place of the former buttons, as this part of the printer frame seems more rigid.

0.2mm

20%

bolt, washers and nut are 100% infill