Integrated Spool Holder with bars

Spool holder integrated with bars.

I designed this spool holder to fit with the aluminum 2020/2040 v-slot bars that are used as Creality Ender 3 frame. The spool holder use the aluminium bars as the center frame because my previously printed spool holder with bearings has broke off after 6-12 months of usage.

The parts required for this build:

1) aluminum 2020/2040 v-slot bars (cut to about 100mm length and the corners need to be slightly cut for the bearings to fit in, as shown in pictures)
2) 90 degree angle bracket (T slot) x2
3) bearings of around 37mm size