RepRap Filament Spool Holder (side mount)

I use this filament spool holder with my Mendel RepRap. It is 3 parts. Parts 1 and 2 I would print at at least 50% fill, but part 3 (the bearing part) can be printed at 10-20% fill. I printed this in PLA at 215C hot end, 60C heated bed, held with 2 M8 threaded rods and 10 M8 nuts, the clamp (part 1) needs 2 M3 bolts and nuts which must be hand tightened.

Note that the inside diameter (ID) of part 3 may vary depending on the ID of the filament spool. I have included a part3 with ID of 58.5mm,