X-axis carriage replacement for replicator 1, 2, or clones. This version provide a better belt anchor/lock. There are two main versions one for lm8suu (original) and for the lm8uu, great if upgrading to the igus type linear bearings like "IGUS RJ4JP-01-08". Also since the belt is now locked from top of the carriage the 3D printer parts is more rigid/solid; a 3D printer part of the original can brake easily. The lm8uu version is asymmetric by design, 1) the limit switch is on the right side and is the stepper motor that triggers it, 2) The filament blower is already taking some space on the left side, the carriage doesn't use any more space then original design (carriage + filament blower).
Print standing on the side, this will give better strength around the bearings as the string of plastic is extruded around the bearing housing. For the belt lock I use 2x M3 8mm screws