Quote Originally Posted by Feign View Post
That's crazy fast, and I definitely like how the rack and pinion system goes together. (it really gives me that "why didn't I think of that" feeling) I wonder how careful you have to be to keep the pinion greased and how it holds up with dust and plastic vapor during operation. Also, how difficult is it to align the platform so you don't have the pinion gear skipping teeth between the two racks?
Lubrication is not really a problem - we're running the acetal racks on steel pinion rods with no lubrication. Printed objects themselves are usually pretty light (rarely over 1/2 lb), so there's not much friction.

Also, aligning the platform is easy - you just align an edge of the platform with the side of the enclosure. The homing routine will detect if the platform is misaligned, and potentially even correct mis-alignemnt by forcing the platform into the correct orientation.