You need an autodarkening helmet and gas. You can get an old unrepairable fender or hood, cut .04-1/16 slits in it and weld them closed. Simulates a butt weld. Good practice and you learn where to set machine. It's possible, that because you will be "spot dot welding" on a day with no breeze, the gas will stay at the weld for the 1 1/2 second burst. You can set the gas flow high but will use a lot of gas. High is 40 CFH. Normal is about 25 CFH. Welding patches in thin sheet takes a lot of practice....... BEFORE you weld on a good truck or you will create huge holes and your patch will get bigger and bigger.....and then there is a huge warpage danger on big flat surfaces.
Maybe you are one of those guys who gets it on day 1.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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