printrbot GO – 8 mm rods, GT2 belts, a belt tensioner and a cooling fan

So after my last round of functional but peripheral upgrades (getting all the tools into handy locations) I decided it was time to focus some time and effort on the printing performance of the bot (an idea that felt almost novel after all of the aesthetic mods I'd otherwise been consumed by recently). It was clear to me that the motion in the Z direction could use some refinement because the x-axis carriage seemed to wobble back and forth a little bit when raising or lowering the extruder manually. Read more [...]