Ender £ (or similar) roller bearing spool holder

thingiverse

replaces the standard bar on and ender 3 type spool holder. you will need approx 120mm of m8 threaded bar, 3 m8 nuts and 2 x 608zz bearings. remove the bar from your old holder and insert the square bit from behind, screw on cap. screw in m8 threaded bar so that you can stick an m8 nut on the end of the small bit sticking out. spin another nut on the long bit of m8 until it hit the cap and gently tighten. insert bearings into roller (tight fit so you might need to push hard or hit it with something) put final nut on (apply thread lock or a drop of superglue to the 2 exposed nuts to prevent the from working loose. the big spooler nut is reversible which allows for different size spool widths