67mm- push on lens cap

thingiverse

This 3D Printed Pen Holder is carefully designed for use with standard 2B or HB pencils, pens and markers. Its unique pen compartment allows smooth sliding movement when opening and closing the holder. With just a few simple adjustments, you can customize your Pen Holder to fit your needs perfectly. Choose your ideal loveliness: From extra-tight to slightly sloppy. Tether your Pen Holder to the 3D printed base or let it stand on its own. Specify your desired diameter from 70mm to 80mm in small increments. Default is 71mm. Choose your lid height. Pick from three standard heights (2mm, 4mm, or 6mm). Default is 6mm. Control the thickness of your Pen Holder. From a delicate thin 1mm to a robust 3mm thick, default is 2mm. Download and print with these custom settings, then attach the holder using glue or another suitable adhesive to ensure sturdy stability on the printed base for use.