Mostly Printed CNC Quick Tool Mount

I made this thing to allow for quick tool changes on the [Mostly Printed CNC IE](http://www.thingiverse.com/thing:790533). The mount on the CNC is designed to be printed in the same orientation as you would mount it, for maximum strength. If you prefer to print it in pieces, print the bottom, tophalf and cap and then insert an M5 lock nut in the bottom part, and screw the three parts together with an all-thread M5 rod.

You do a tool change by unscrewing an M4 wing-screw out of the insert's M4