is there a list or a rough idea of what to set the speed to cut for the size of material we are cutting? I know each plasma machine is diff but a rough idea would help me alot, i am cutting 1/4 and the factory speed (1600) is way to fast
For 1/4” mild steel I would start here.
45 amps
.08” torch cut height
.2” pierce height
.5 sec pierce delay
60”/min cut speed
30A
.08” pierce z
.06” cut z
.75 Prc Delay
28” feed
Miller 375 Spectrum X-treme
What amperage are you wanting to cut at?
You can cut 1/4 mild steel anywhere from 40-100 amps.
For the best cut I like to run the lowest amperage and slowest speed possible.
For 1/4” I generally cut @ 40 amps - 45-50 ipm. .062 cut height about 1 second pierce delay ( depending on machine and nozzle size I usually set air pressure from 80-90 psi )
Just google plasma cnc setup chart for your specific brand and model of cutter, you will get a bunch of charts- if theres not one for your machine you can use a close comparison machine… 
I guess Trevor didn’t like any of our answers……. Not a peep in the eleven days since his post for help.
im sorry had some personal issues to take care of i app all the answers thank yall
