Reprap Fisher Curved Spool Holder

Hi, this is a new design of spool holder for filament reels on my Reprap Fisher. I made it curved as I noticed that with my other design the spools would slowly move to the end of the filament holder. Although no spools had fallen off, my design probably ought to be updated to nice curved to stop the spool holder wandering down the spool holder. Besides I really like it.