Another lead screw cleaner for 8mm, 4-start, 2mm pitch lead screws such as that found on the Bambu Labs X1 Carbon and others.  

This tool is designed with undersized fins on one side of the clamp, which will push a paper towel into the screw threads for cleaning.  Cleaning a lead screw this way has several advantages over other designs:

• Paper towel can be discarded after each use, so that contamination isn't carried over from previous cleanings.
• Clamp design does not put axial load on the screw.
• Prints quickly in one piece.
• Low profile can reach tops and bottoms of lead screws.
• Long handle can reach the rear z-axis screw of the Bambu X1 Carbon.

Print on finest settings for best performance.  The clearance between the printed threads and the lead screw channels is designed to accommodate blue shop towels, but should accommodate many different disposable towel brands of around 0.3mm thickness when compressed.