I haven't had a chance to try it yet, but I made a grooved roller to use the MakerGear extruder with TPU:
http://forum.makergear.com/viewtopic.ph ... =10#p36804
Thanks for the tip on 3DFuel's PLA. Their PLA Pro is about 50% more expensive than eSun. Given that I don't have issue with the eSun PLA+ stuff, what can I expect to get for the extra $$? I notice it prints at a slightly higher temperature, which could be good as long as it doesn't warp too much. It also has tighter diameter tolerance, although as I said, that's never been an issue for me with eSun.