Has anyone added any upgrades that made a huge difference to quality?

[jhertzberg 19]

I use this one http://www.thingiverse.com/thing:145544

with a bearing spacer so to reuse the original rods: http://www.thingiverse.com/thing:238648

 

A note of caution. I also used the bearing spacer, but with Nick Foley's direct drive Twister Blocks). It worked fine for the y rod. However, the clearance at the front left corner of x rod before the pulley of the y rod is ~13mm, but the bearing spacer protrudes 16mm. After failing in my attempts to trim and ream my two spare spacers, I had to cut a spacer out of doubled over quarter inch plywood. I presume you avoided this pitfall by mounting the x motor on the front right corner, since the rear has space no longer used by a motor pulley. I redesigned the spacer for 12mm, but it's such a hassle to unmount the motors that it will go untested until my next big upgrade.

(BTW, your motor block link is broken. It has a space on the end.)

 

[antiklesys 3]

This is the curse of this forum...and it seems it doesn't like Internet Explorer.