Filament Guide for CTC 3D Printer

At some point in the use of my CTC 3D printer, I kept getting annoyed at how unwieldy the filament string was. It didn't matter wether the filament was ABS or PLA. If you accidentally let go of the filament string during the changing process, the filament roll would unwind badly.

I thought about putting a large metal clip on the top part that is used to mount the metal guide for the print bed. Then I thought of making these babies.