Scissor mechanism spool holder with clip

> http://www.thingiverse.com/thing:1698943 is my revised version <

Be able to carry almost any width of spool size, due to the scissor mechanism.

The spool is held in the centre, and will not 'derail'.

I have added a 2 filament clips, to keep filament untangled when not in use. One horizontal, and one vertical.

This is a fully printable object, but use of 623zz bearings is preferred for smooth rolling.