Spring loaded CNC mount for a Donek Drag Knife

A spring loaded CNC mount for my Donek drag knife. http://donektools.com/
Needed to cut paper for testing and thus got a Donek Knife for my CNC - but The tool length and the collect diameter did not fit my CNC. Thus this holder is to replace the router and fit into the CNC. I made it spring loaded to compensate for the uneven surface of my vacuum pad.