Side Support for K8400 Print Bed

This K8400 upgrade limits bed movement along X-axis. I added two 8mm rods - one on each side of the bed, but single side support may be sufficient as well.

I decided to design these things after seeing the image posted by svdv here https://www.thingiverse.com/make:330539/

Each side requires:
- one 8mm x 248mm rod
- one LMU8 (8mm x 15mm x 24mm) linear bearing
- four M5 x 12mm cup head screws
- four M5 self-locking nuts
- four washers for M5 screws
- one M3 x 25mm screw
- one M3 self-locking nut
- two washers for M3 screws
- two M3 x 20mm cup head screws

If you want to have support from the both sides then double above numbers.

You will also need four M3 x 8mm screws to attach corner pieces to the bed plate.

IMPORTANT: This design requires making four holes for 5mm screws in side panels of the printer and two M3 threaded holes in the aluminium bed as described here https://www.thingiverse.com/thing:2255250 One more irreversible change - you may need to cut unu