A couple bearing questions if anyone happens to have a moemnt to answer them. Specifically relating to the Z axis.
So, at the moment I have Lulzbot Ao-101 style pillow block Igus bushings on the Z axis. It works pretty well, and faily fast, but If there is something out there I can do to improve accuracy, I’d like to explore it. I see the TAZ uses LM10UU bearings / bushings. I also see a variety of mods using LM8UU bushings already in existance. I kind of like the size of this printer, so I don’t really want to go with a bigger one like a TAZ, but i wouldn’t mind making it a bit bigger / altering it / etc to get enough accuracy to try that bed leveling trick if I need to, because that thing is just neat!
So I’m wondering, assuming I want to stick with some sort of solid rod, but don’t necessarily mind changing out for something different / larger / multiple rods assuming i can make a part to make it fit, what is the ideal bearing type for the Z axis? is an LMxUU bearing significantly better than a pillow block one? Is there a better choice? Are the 10’s going to be worth the effort to make a bearing holder over the LM8UU’s if those are the best choice? I kind of don’t want to go to the extreme of mounting a full up linear rail on the Z axis, since that looks like it would be painful to engineer without basically ending up with a different printer.
So what would you put in if you were going to rebuild a portion of that axis, or would you?