My first go at making a CNC router

[JAZZCNC]

Yes the principle of spring loading into rack is ok and how it should be done. But wouldn't copy is weak design for router (he's using Plasma so not so much an issue on the cut). Watch how the mounting flexs @ 0.22s when he puts is hand on it.
This flex will show in the machine. Maybe not in accuracy but will in resonance and this resonance transfers thru the machine and into the final cut. Is too bad it will cause excess wear in the pinion/rack.