Raise torch height for Aluminum?

CrossFire ® General Discussion
1

The internet is undecided if the torch height needs to be increased when cutting aluminum…so I’m asking the crowd here.

I did my 1st cuts on the Crossfire (w/ THC) this weekend and after some trial and error, yielded some good parts. I was cutting 1/8" stainless (45 amps @ 40 IPM using a Razorweld Cut45), and had the torch height set to the default .063".

I developed a small (2"x3") test cut and and samples from 55 down to 30 IPM…and found that 40 seemed to give the better results.

My next efforts will be cutting 1/8" 6061 aluminum. I plan on running more of the 2"x3" test cuts to dial in the speed, but should I plan on changing the pierce and torch heights?

2

No all your setting should be fine. IPM will be about 75 or so.

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3

Apply some MIG nozzle gel to the torch tip and retaining cup. This will help prevent aluminum slag from sticking to the tip, which can cause the torch to lift during cutting. I also agree that your settings are fine. Just remember to increase your Inches Per Minute (IPM), as @mechanic416 suggested.

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