608 Bearing mount - Vertical Windmill MK2

This is a remixed 608 bearing mount as originally designed by Michael Broderick for his Vertical Windmill (https://www.thingiverse.com/thing:948401) - see a made-one here:
https://www.thingiverse.com/make:483386

Changes are as follows; reduced the size of the hole for the bearings a bit since these were a bit too large for me and also added a support lid at the bottom such that the bearings do not drop out without having to work with large washers or alike.