DB's DeskTop Filament Spool Holder

I've seen so many standalone Spool Holders and their great
But I needed something portable but completely stable and still adjustable to the spool sizes I commonly use
This fits my requirements and I think will fit yours too
I made it secure-able with M3 screws for locking position or attaching to a printer's frame

Made a spool diameter adjustable version
Link: http://www.thingiverse.com/thing:2060308