small master spool

This is remix of
https://www.thingiverse.com/thing:1738730/

Modified for my purpose.

Rough dimensions...
inner diametor: 58mm
outer diametor: 160mm
inner width: 25mm,35mm(spacer ring used)
disc wall thickness: 3mm

Suitable spool size...
Coil outer diameter: 155mm
Coil width: 23mm~33mm
Coil inner diameter: 80mm