Low Height Ball Bearing Spool Holder (3x10x4 BB, Creality holder)

thingiverse

I leave my Ender 3 printer in a closet and the height of the space is lower than the printer itself when it's loaded with filament on top. To solve this problem, I simply lowered the spool. The original spool holder design didn't lower the printer height enough and had too much friction, so I came up with an idea to use ball bearings. I ordered a set of M3 hole ball bearings because I already have various length M3 screws in my collection from my RC quadcopter days. This new spool holder fits all three brands of 1kg spools I have and works well within a maximum width of 65cm. The result is extremely smooth filament movement now. Additional parts needed: * One 30mm long M3 screw * One 16-20mm long M3 screw * Six 3x10x4mm ball bearings with a hole diameter of 10 and a width of 4 I use the following set of ball bearings: https://www.banggood.com/10pcs-623ZZ-3x10x4mm-Ball-Bearings-Shielded-Radial-Bearings-p-1049663.html?rmmds=myorder&cur_warehouse=CN Please let me know if you notice any issues, have suggestions or comments. I'm not sure why I get a layer shift on the protruding part of the print. The model looks correct in both Fusion 360 and Cura but this might be due to a bug in my version of Cura 3.6.0 beta. Update: New version V4.2 with added reinforcing beam, released November 12th, 2018.