Firstly, print the Spool_Support_Zaxis_10mm.stl part.
Also collect (either 10mm or 3/8 in) one 135 mm piece of threaded rod, 4 washers, and 6 nuts.
Now file out the inside of the part to make sure that the rod will fit.
Simply remove one of the support bracket rods from the back, and move the pre-existing washer and nut on one end downwards.
Now put on the spool attachment bracket, and tighten the nuts surrounding it.
Now you can reinstall the support bracket.
Put a nut and a washer on the threaded rod piece, and slide it into the bracket. Now put a nut on the other end.
You want your spool bracket to look like the image above.
Now simply put a washer between two nuts on the other end (to keep filament reels from falling off).
That's about it for now- come back next week for Thingiverse Reviews!