I find it very interesting that the Asian (Chinese) 3d printer makers are finally getting the message (see Creality products). VRail with wheels is far more reliable, more forgiving and generally work better than the linear bearings they've been using for years (see Prusa-clones). Not to mention with the eccentrics you can dial out the play. I'm done getting burned by recirculating ball linear bearings. They HATE misalignment, and way too often they're either too sloppy or too tight, with no recourse. If you're designing your own system, and the loads aren't too severe, the OB rail and wheels are the WAY TO GO! Huge thanks and pats on the back to Mark and the OB team for making this all possible. Neil
