Universal Filament Spool Mount

This is my first thing so please let me know if there is anything I can do to make it better!!! I kept having trouble with getting different size cutouts in my filament spools and the makerbot filament is NOT universal, so, I made on that is that doesn't require re-spooling filament.

I printed and mounted this last night but have yet to update one of my mounts with the spool feeder that I added this morning. I have provided the file though and will update pictures after the print finishes if