I really like the design. It printed really well laying flat on my Ender 3. I turned the object so it was printing diagonally thus giving it some more room. I also used supports so the channel that's supposed to fit onto the aluminum extrusions didn't warp. I did however go with an infill higher than I probably needed because I really didn't want anything to break(I anticipated myself fighting with the part a little to get it onto the extrusions but there were no such issues)
BTW, I know I need to move the filament spool to the right so the smaller arm is also supporting the filament.