Really frustrating update!

   I've spent the last two night trying to make a strong yaw mechanism for the upper arm of the full size humanoid. I've refined the design and fought with sketchup to export an .stl that doesn't have any non manifold or self intersecting surfaces. I finally managed to refine the design to something that works and now the printer itself has decided it doesn't want to play ball.

   I just spent 6 hours on two prints that both failed half way into the print. As you can see they both skipped on a Y axis on both prints, but on different layers. This is suggesting a mechanical fault with the printer so I am going to get my WD-40 out and lubricate all of the guides. I'll clear any dust or particles out of the mechanism and make sure there is nothing messing with the cables of that sensor.

   I should have a pretty bad-ass upper arm to show by now but I am still at the printing stage after three days. Very frustrating!!! I will update this log when I have more success.