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Okay, I have been trying different things to get rid of a fairly severe serrated edge when cutting letters (curves). I have changed back to 20:1, changed the THC rate to -15, changed how we index the torch plate so that it doesn't vibrate, and played with profile settings. I have been able to eliminate most of it but it is still there. The one thing that I haven't messed with is motor tuning. It has been suggested that I may need to adjust acceleration/velocity but I don't know what to change the numbers to. I figured that this would be the best place to ask since we all basically have the same equipment. I have also read that there might actually be something in the GCode that can make it happen... Is that accurate? Any suggestions?
I just emailed the gcode to you. I have already replaced the consumables; I have tried a psi range of 66-72; an amperage range of 40-45 amps; speeds of 120-150; and, tip volts from 83-100.
I will try the speed tomorrow. I replaced the electrode but the nozzle looked pretty good. Tomorrow I will replace the nozzle and the ohmic retaining cap to see if there is any difference.
Yet another possibility is the PC isnt sending signals fast enough. If everything is right that cut should be buttery smooth. Something is wrong and thsoe cuts look horrendous. I know some PCs can get overwhelmed when you have too many programs running.
A quick way to tell is to hold the trigger on your controller and jog the machine. If you see any jitters then there is a motion issue. If not it doesnt rule out the PC but it may rule out the table and electronic controls.
Serrated Edge?
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