About this 3D model

I need an adapter to use Cardboard Inland Filament on a plastic spool. I created this to allow the use of the Bambo Lab Reusable spool with the Inland Filaments. As with others, take one side off, and insert one side of the spool then remove the oposite side of the cardboard spool. When both sides are off, insert adater through the center aligning the Tab in the cutout of the spool, and the notch on the tab on the Bambo spool. This will lock the cardboard center into the spool so it will not rotate.