The mount that is part of Heavy duty printable filament spool, http://www.thingiverse.com/thing:10219, didn't work for me. I figured that it may not work or others so I threw one together in openscad. I didn't find any scad files to start with so I created a fresh one. It's my first openscad creation, so forgive any noob errors.Adjust the parameters in the scad file, scroll to the bottom and adjust the parameters to suit your needs.spoolMount(barrel_l, barrel_d, spool_center_d, hook_l, hook_nub_l)The values that you will most likely need to change, if you are using this with any of the spools that fit on the typical spool mount clip, are the last two. They modify the length of the hook and the nub at the end of the hook.You can change just about any portion of the mount just using the arguments.