Summary note June 19th 2016 slight adjustments to fit better with the stepper motor up loaded and has the word "Adjusted" at the end.. the original works but you may have to file the mounting holes a little Adjusted file should fit without filing For 20mm Alum framed printers. Found the structure of the stock designed Y motor mount to be way to flexible on the Max Micron. Shifted upper bolt for better stability and added joint structure to 90º turn area to stiffen the whole thing a LOT!