SmartRap Geared Extruder

This is a geared extruder for the SmartRap designed by modifying @Mak-a-face's excellent E3D V5 Compact extruder, and using two gears made by @AlmeidaJuan.

Please ignore the excessive amount of washers, I don't know where I got the hobbed bolt I'm using in the picture but the distance from the head is ridiculous.