Being a man of physics I used seconds.
It is minutes - 1000 in/minute. Max slew rate on my 4'x4' plasma table.
I cut 1/2" armor plate AR400F or AR500 at 10in/min and
21 ga. 7075 at 300in/min.
I could run faster on the 21 ga - but I test fate so it seems :-)

Martin

Bob Engelhardt wrote:
Pete C. wrote:
IPM, divide by 60

10-300 IPM is typical plasma cutting speeds.
...

It's funny that they would use IPM as the unit rather than IPS. IPS is
much easier to grasp intuitively. E.g., 5 IPS vs 300 IPM. 5 inches per
second I can "visualize" the velocity: think "one thousand one" &
imagine a 5" distance. 300 inches per minute I can't.

Bob