Wanhao i3 spoolholder.

i got tired of my old spoolholder making to much friction. so i took a 20cm m8 rod and 4 m8 nuts. would be best to use 2 nylon nuts and 2 regular (for locking the spool in place)
2 x 608 skateboard bearings are needed.
the disk i made is a simple 53mm with a 60mm flanch and a 22mm hole 7mm deep for a bearing. it´s simple buth does the jobb