ThinkyHead's i3 Printable Spool Holder - Extended 40mm - Misc Part Tweaks

This is a remix of ThinkyHead's filament spool holder. The original was too short, and didnt provide much clearance between the bottom of the spools and the the top of the frame. My wires wrap over the top of the frame, and would catch on the bottom of the spools.

I extended the beams by 40mm. I increased the square hole size in the rod bearing adapter so that I didnt have to remove so much material from the top of the beams. I also adjusted the size of the spool adapter to fit better in my