im doing some pretty detailed awards with lots of lettering for my old high school, and I’m trying to dial in my speed and amperage to do so cleanly. Im cutting them out of 16 gauge steel, starting at 23 amps at 120ipm and bumping my amperage up by 2 amps every time. as you can see, I got to 31 amps and it still wasn’t great, so I turned my speed up by 10 ipm twice but that didn’t really seem to do much.
note, the picture cropped weird. the test cut on the bottom is 31 amps at 140 ipm.
I’m running my PrimeWeld cut 60 with a torch head and consumables all from George’s plasma cutter shop. I’ve got 120 psi to the cutter and I’ve got the torch pressure set to 70 psi. I am running THC with smart V.
On a separate note, a few months ago i had my table cutting 14 gauge like a dream. basically zero dross to speak of. But then I realised that my torch had been cutting at double what the cut hight should be (about 0.12" with a feeler gauge). after i fixed that and got it down to 0.06", I have never been able to cut cleanly again. always a good amount of dross on the back side. maybe that has something to do with it?
let me know any other questions you may have.
Thanks,
Sam
