I received everything, built, setup, struggled, tested, read this forum, fought with random errors, replaced my control PC, THC voltages struggles… So YESTERDAY I am all done, it works, it doesn’t flake out, all the voltages look good — TIME TO CUT!
I’m using a Klutch I already had. It is set to 40 amps, air pressure is 75 psi (68 to 70 while cutting). Other than a quick test cut by hand with the torch, it went on with new consumables. I have cut shelf brackets and no surprise, I had to vary the cut speed. But even with it seemingly correct, I’m getting a lot of dross. So I made 7 test cuts pictured here. This is in cold rolled .122" material as measured on the edge.
Only feed speed was varied:
Top Line = 65 ipm
added 5 ipm each line going down
Line 7 = 95 ipm
From the front, looks like my choices are 65,70 and 75 ipm.
But on the back, none of them look like a good choice.
What am I missing?
I may have answered some of my question myself, I ran it again from 30 ipm up to 60 ipm with the following results (below) I guess I just didn’t expect it to be so slow. Looks like 40 to 50 ipm is the sweet spot.