I recently got the chance to use a 3D printer for the first time the other day when a friend loaned me his to see if I could get it working again. (I did.) It's a TAZ Lulzbot 3 and it's incredible to me how many parts of it are printed, and how close they are to the heating elements.
I haven't yet used up the single spool of PLA it came with, during my few days of printing mostly trinkets.
Right now I'm working on replicating these:
http://www.shapeways.com/model/843532/gear-wrap.html?materialId=76using this:
https://tinkercad.com/things/2zLpRaIJUt8-cable-wrap-gear-copied/I tweaked that guy's model a little because I only have PLA which is much more brittle than the nylon that the official ones are supposed to be made out of.
Got a few hours left before the first ones are done and I can revise and reprint.
What are you all up to?