Just ordered one. https://printrbot.com/shop/gear-head-extruder-v0-01/

Great to hear they shipped! Just got back from a trip… Happy they are on their way to new homes. Share your feedback!

Got mine yesterday and started putting the extruder together. I stopped when it was time to slide the bearings onto the motor shaft. The fit is very tight and I didn’t want to force them on and cause damage. If anyone else gets their kit soon I’d like to know if you run into the same behavior.

I actually got lazy and teamed mine. The drawings don’t account for the natural over-extension that happens on printed ID holes.