Wanhao duplicator i3 mini bed extension (IIP, Wanhao)

This is a bed extension for the Wanhao duplicator i3 MINI. This allows the Y axis to use the entire length of the build plate. I used https://www.thingiverse.com/thing:2716152 for the belt tensioner. I glued mine in place.
i haven't been able to edit the firmware bed limits for this to work, but prints perfect on the stock area of the printer. UPDATE:. Reflashed TH3d. Edited software bed size. Works great.

will need 300 mm rods for the extension & some longer M3 screws for the bed (ma