the extruder mounted on the x-axis is an dumm thing, heavy for the z moves ,and you have always move the printer or your self for load and unload the filament , i already has an mega 1.0 and made an top rack-mount on it, and enclosed it. it still works very fine . I bought last year (black-friday-offer) an mega pro , it has the same bowden setup on the x-axis , i have made an update for this Mega Pro. i did not see anything on the internet like this .( If somebody knows let me see it ) you can easy turn the extuder in the right direction and easy feed the filament in it . no-more Hasseling the machine and feeling where your filament goes . Here you see what you do . 2 versions are here in 1 design, 1 for without encloser ,and 1 for encloser body ( see my designs )= is still in developement ..) Some basic scews are needed , the old screws you must use for the x-axis cable holder ( 6 ) , if you use it . the bowden tube is still the same . The motor cable and filament sensor , must be lengthen up for 50 and 60 cm, i had do this with the correct plugs and connectors ( you can solder the wires, but make it safe, or you blowup the printer). Printing; The models are on the right orientation for best printing . The numbers 1 ,5,7,8 have an extra brim-support ,so the piece get non brim inside, remove it after printed. number 4 has an support ring for bridging ,remove that too , or you cannot install the screw and spring. I printed all the stuff in pla , my standardsettiings are : 20-20-333F40B4-4040 SP. This means in slic3er setting: first layer 020 height normall layer 020 perimeters bottom-top-wall 3-3-3 inFill 40% brim 4mm width perimeter 040perimeter and infil 040mm single print mostly , then the prints are smoother printed . all with nozzle 040. speed about 40mm/s Print time about 5 hours. See also mine other designs for printe If you download it , give an like please , thank you