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How to Cut More Accurately With Your Plasma Cutter



Kevin has been playing with the AHP AlphaCUT 60 plasma cutter and is just about to try out some new plasma cutting torch tips sent to him by George, a plasma cutter expert.

George sent Kevin three new tips to try. Yes, there are different sized nozzles to fit the torch on the AlphaCUT 60, which was news to Kevin. George sent three diffferent sizes of nozzles and electrodes. Each size also uses different amperage and air pressure (PSI).

He sent .035 size nozzles, which you use with 60 - 65 PSI and 30 - 40 amps. He also sent some .040 nozzles, which use at 65 - 70 PSI and 50 - 60 amps. The last nozzles are .045, which you use at 55 - 65 amps and 70 - 80 PSI.

Kevin decides to test the value of the different options by putting the .035 nozzle on the cutting torch, setting the amps and PSI at midpoint of the recommended range, making a cut, then trying each of the other tips the same way to see what kind of difference they make.

After putting on his safety glasses and leather gloves, he starts by cutting a piece of 1/8" steel using the .035 nozzle at 63 PSI and 35 amps. Then Kevin cuts the metal using the .040 nozzle at 66 PSI at 55 amps. Finally, he uses the .045 nozzle at 75 PSI and 56 amps.

Afterward, Kevin shows the difference in the kerf width of the cuts - they are noticeably different. On the back side of the metal, there's very little dross on the .035 cut, a little more on the .040 and a bit more yet on the .045 cut. That's probably just because the plasma cutter is cutting away a little more metal on each cut.

Kevin says the effect of the different sized nozzles is interesting. This opens a whole new world for him - different size nozzles, different amps, different air pressures, different metal thicknesses. This is why he practices and you should practice, too.

Kevin recommends talking more about this with George, but first, reach down there and hit the subscribe button so you can see more how-to videos - he releases one every Wednesday morning.

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