This is a mount and accessories meant to go on a spool shelf made out of 1x3 wood stock. The mount once printed slides on the shelf with the tension screw facing up. This prevents the attachment from interfering with objects on the shelf. The screw is then tightened down to pull the bottom of the mount tight against the wood shelf. The spool holder inserts into the mount and slides down to lock in place. If the spool holder is going to be used on the top shelf, extra Mounts and Optional Filament Guides can be printed to manage the filament as it goes to the printer. The Spool Holder displayed in the photo is a shortened version for demonstration only, the full Spool Holder STL is attached. This was submitted for the 3DPrintingNerd design contest.