Wanhao Nozzle Wiper

This thing is inspired by http://www.thingiverse.com/thing:1192440 and I borrowed the tool change gcode from it.
The whole thing is supported by one of the frame screws, I should have used a longer bolt to hold it properly but I ended up just grinding down a M5 nut so the thread started flush, and made the model as thin as possible so I could use the protruding thread from the original bolt. You will need to adjust the height so it matches the height of your HPB when it starts printing.

So