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Usually this test is given with a procedure that allows for 1/8" electrodes.
But some welders are being required to use 5/32" 7018 which is more challenging. This video has a few tips that should help
Outside Corner joints on 11ga 6061 aluminum are enjoyable. This This Aluminum cube project is a good way to get some practice on outside corner joints.
Some Structural welders are being required to make welds like this 5F round tube to flat plate using 5/32" 7018. Here are a few tips on machine settings, arc length, and body positioning
Pipe Welding downhill is required for many procedures in the oil and gas industry. It helps to start with plate and gradually move to pipe once you have the basics