Fix a printed holder onto the top of z-axis of the 3D printer with two M5 x 80 mm screws. Cancel the filament sensor with a piece of filament. Requirements: Paper tube: ID = 23.3 mm, OD = 27.3 mm, L = 95.0 mm, from a 50 m Saran Wrap package in Japan Pillar: spool.stl End cap: endcap.stl screw: two M5 x 80 mm screw: one M6 x 90 mm MD5 (spool.FCStd) = 2aaf0e239949fc041c8a14476eeddb94 MD5 (spool.stl) = b7c42e1d6e03747caed9c7d96fd52a70 MD5 (endcap.FCStd) = 949febe157617dc24cdb46b51caec2c9 MD5 (endcap.stl) = 272d6595405bba65b173c454a1e20142