Router/Plasma CNC Build From Down Under

[Tinkerer]

Just going out now but will reply better later, however for the wheels design have a look at this video, at about 4:20 min. into the video it shows how to move it, I have one of those machines and the idea works great. It's two fixed wheels at the back and adjustable height feet at all other points.
http://www.youtube.com/watch?v=J2ry1DxNFA0

Thanks Eddy. It looks like a simple solution, but I would not want the machine sitting in wheels all the time for rigidity. I need a simple mechanism to raise and lower the legs or remove them. How do you remove the two rear wheels?