Originally shared by Nicholas Seward
How cool is this!!! (I left off the question mark because it really isn’t a question.)
http://www.youtube.com/watch?v=IEGTe1G2Gqs&feature=share
Wow, dude, that is amazing!
I haven’t finished reading your whole thread on the reprap forum: Is the transformation of the Cartesian coordinates the same as with the Delta bots?
@Chet_Wyatt The math is actually easier than for linear rail deltas. With the Proportional Gear Drive Joint (PGDJ) I drive the distance between the extruder and the shoulder directly.
I really liked your design with the small 2-arms mounted on the wall, will you still finish a design we could mount incognito on the edges of our rooms?
Looking forward to more progress! 
@Steve_Sharp https://www.youtube.com/watch?v=TriGIQPAmcg Wally hasn’t done his first print yet but maybe he will today. I don’t have much time left for the maker faire.
I just realized that you’re using guitar machine heads as tensioners, Awesome!