I made a moisture-proof material box for my printer using an external rice box. The filament that comes out is steered by two pulleys I added myself. There was no suitable installation position for the bottom pulley, so I made this frame. The shape of the frame matches the concave and convex parts on the printer's chassis. The bottom and one side of the frame are adhered to the chassis and pillars with double-sided tape, and the other side is installed with pulleys for steering