Fabrikator Universal Spool Holder (reduced material)

this is a remix of cgcrute's spool holder for the Fabricator or any printer using a 10mm/3/8" rod http://www.thingiverse.com/thing:928600
what I've done was reduce the amount of material needed to print this... this version can be used on spools with 30mm to 72mm center holes.... I also included a nested complete set of parts version (so everything can be printed at once)...
EDIT: printed another set at .25 came out perfect and saved even more filament plus it worked just the same, just not a