A filament spool holder for the MakerBot Replicator 3D printers. It is designed to fit most spools and be 3D printed without support material. It is made of two symmetrical halves which are held together with filament pins and two small cable ties. One can alternatively also use small 3 mm screws and nuts. (no glue required!) The original CAD and netfabb files are supplied for easy design changes. A longer version of this file is alos supplied so that extra wide spools can be loaded. Download the file "Split_filament_spool_holder_for_Replicator_3D_printer_v02 (135 mm spool width).stl"