Improved spool clip

Update: I have improved the design, making it stronger and doesn't require supports to print anymore.
This is a variation of the clip for the spool holder designed by jadames. http://www.thingiverse.com/jadames/about
I was a bit paranoid about the threaded spool rod being pulled out of the holder during a print, particularly as I have printed the straight version of the spool holder without the stabilizing beam.
I also have a case for the LCD board installed which pushes the holder arms outw