I agree with you this is most likely due to the difference in the printer. I uploaded two pictures showing the two chambers I printed today. I will ship them out tomorrow. http://www.thingiverse.com/… (View Post)
We modeled the Nalgene chamber setup and designed an ETC chamber that can be 3D printed. Two sets of vertical grooves were added to hold the electrodes in place. There is also a groove for fitting an… (View Post)