I have been working on one of the prototypes for my first plasma CNC/Router book. I was doing some speed and acceleration tests and while running at almost .6 Gs, I decided to un tether the machine from the wall and raise the levelers so it was riding on the casters.
She is running at about 3000IPM at .6G
https://youtu.be/3k_s_AIoajU
The current prototype now has the X and Z axis attached so it has even more mass. Will have to let her out for a little dance to see what happens.