How snug are your LM8UU bearings? I find that my 8mm rods slide, but it doesn’t feel super smooth. Was expecting near effortless movement.
Solved. Tolerances too tight on my 3D printed parts, causing too much pressure on the bearings. Filed down my parts a tad and now they feel okay!
Yeah the roller style bearings can take very little pressure, the non roller actually need pressure. Tricky