Hello @vcotton , welcome to the forum.
It looks like there are lots of links that are not working on this thread. It is an old thread. You could start or search for a new thread but @jamesdhatch has a very useful comment buried in the conversation:
I take it that you have Hypertherm 45XP? It is an excellent machine and Hypertherm is unique in that most cutters follow the cut charts in the manual. If you don’t have a copy, it is available at Hypertherm website and sometimes at the vendors online. I just searched for “Hypertherm 45XP manual” and lots of links popped up, mostly vendors for welding supplies.
Here is a copy of the cut charts:
Powermax45XP Cut Charts.pdf (1.3 MB)