Summary remix of thing http://www.thingiverse.com/thing:162647 by tonymtsai which is a remix of http://www.thingiverse.com/thing:141479 by jamesarm97. This remix provides the same functionality in a low profile form so the hotend can be mounted higher on the x-axis which improves stability while printing and results in great printing quality improvements. Best printed with 100% infill as your x-carriage has to be supported by this. Total height is 13mm instead of 23mm for the one from tonymtsai. Another 2mm could be shaved off if the bottom mutter is trimmed by 2mm. A spring has to be added below the top mutter for the anti backlash to work properly and the top mutter may not stick out of the part. Feel free to use/modify it to your needs.