Top corner filament spool holder for cobblebot

This is a filament spool holder for the top corner of a Cobblebot printer. You will need to connect it to a gear (such as the planetary gear at http://www.thingiverse.com/thing:72069 ). The hole provided is for a 5mm hex (such as PC motherboards use). The holder attaches to the printer using 4 5mm bolts with t-nuts in the grooves. Note that the SCAD model is 'right side up'; you will want to rotate it down 180 degrees for printing.