This is a modified Prusa Mendel X Carriage that will fit the standard Mendel X axis. It uses PLA bushings instead of the standard bearings.The main difference is that it will clamp to the Mendel drive belt using the 2 clamps provided in the design.A secondary difference is that it will hold the double-Wade seen in the background of the photo (details coming soon).Print. Fit X belt clamps with M4 screws, washers and nuts. Glue the plastic bushings into place on carriage body. It's a good idea to glue the M4 nuts for holding the extruder into the cavities as they are hard to reach. Push onto X axis rails and leave while glue sets. Clamp X drive belt on. Clamp on extruder ditto.Once on the rails, it is hard to remove forcibly without breaking the bushings.