About this 3D model
i printed the Solidoodle Jigsaw Replacement Extruder http://www.thingiverse.com/thing:47561 but i found the extruder wobbled LOTS and i also wanted the accessory holder, so i added a support to the accessory clip from the mk3 to hold the extruder in place. it should be ready to print but you might need to flip it on the bed and print with support, for the overhang