Da Vinci Inside Spool Holder

I modified the original which is found here http://www.thingiverse.com/thing:433194, so that it will fit on the inside to make it easier for the printer to pull filament. It works extremely well with the filament guides from here: http://www.thingiverse.com/thing:592197

I know the stl isn't perfect this is my first creation, it it was only out of necessity for me, but I thought someone else might use it as well. So far it works great, hope you like it.

Also thank you to the original crea