My library needed a way to use third party filament spools so I remixed and combined the adjustable filament spool holder HERE (https://www.thingiverse.com/thing:4951629) with the spool holder adapter HERE (https://www.thingiverse.com/thing:906547). 
Files include the STL and GCODE and the .MAKERBOT format had to be uploaded in the .ZIP file.
NOTE: A little sanding may be in order to clean up the support interface area. No lubrication is required (so far). Also, when you print the parts for the adjustable spool holder (4951629) you won't need to print the "main_support.stl" since it's already a part of the "hook".