Fits on the end of the aluminum platform of a Solidoodle 3 or 4. Reduces wobble along the X-axis that is caused by a Z-screw that is not perfectly straight and/or off center. I would say that this change has had the biggest impact on the quality of prints. I recommend this or one of the platform stabilizers that inspired this for any Solidoodle printer.Print Stabilizer parts ( all ) and rod ends from the stl files. I used ABS with 20% infill, 0.2mm layers for small parts, 0.3mm layers for large parts. solidoodle_aluminum_platform_stabilizer_v1.stl This file contains all the parts that attach to the bed platform. (print with the flat side down) solidoodle_rod_ends_for_aluminum_platform_stabilizer.stl This file has parts for one rod end. (so print 2x) Use your control software to move the Bed up and Down and check the following