MK5 DUAL-STEPPER MONSTER POWER!

I've been running TheRuttmeister's Stepper powered MK5 for a while, and the primary problem I've had is that the steppers I'm using - the stock Makerbot ones, from a cupcake - are a little underpowered for the task. The stepper misses a lot of steps if I have the tensioner tight enough to consistently grip the filament.

Well, I had ANOTHER spare stepper from the ol' cupcake box and the controller too, so I wired up two controllers in parallel and two steppers on the extruder.

Now I have