I'm currently testing Wade's extruder with Nophead's Gear and Idler bracket on my Shapercube. Thanks to Prusajr's design, I was able to easily mount it. The mount with cable binders is not bullet proof but it gets the job done.
The dark stuff is "WEICON Flex+bond" glue, which I had only in grey colour. A combination of production error and too much force caused delamination. The glue holds it together nicely.
The main thing I dislike on Wade's extruder until now is the serviceability. When something is blocking the extruder, the drive teeth eat the filament quite fast. For example, a failed part after this happens looks like this:
And the drive looks like this:
Wade's design could be improved if this drive would be accessible from the top or side, without having to disassemble half of the parts to get there. I'll try implementing this in the next days.
I haven't found the perfect way to clean this up, yet. I was thinking about a screw on the other side that rotates with the same speed of the gear, but that would add a lot of complexity to it, because a second gearing would be required.
Another idea I had is adding a small wire brush, but that would not be effective on the plastic that got inside the teeth.
I'm having success with drive gears made out of a M6 tap. The wider teeth won't eat the filament on normal operation. Even if, a short spray out of ice spray does the job.