Updated to version 1.5
New version has rolling resistance screw below the spool shaft to make it easier to place and remove a spool.
This is an under shelf mount for this really cool spool holder:
5 Bottom Layers
5 Top Layers
20% Infill (honeycomb)
Auto Supports (can omit supports from holes without issue)
What you will need:
1 x 150mm x M8 Threaded rod. (if you have an Anet A8, you have two of them. :)
2 x M8 Nuts
2 x 608 Bearings (8mm x 22mm)
2 x Bearing spacers
2 x screws for hanging the mount (the screw head can not exceed M8)
1 x M4 x 44mm screw (this provides rolling resistance so your spool doesn't turn too freely.)
Remove any infill from screw holes as it is not needed.
They work best when angled as shown.
My current set up.