a wire wheel works just fine, but you risk boogering up the threads on an AN fitting.
downside to a preburn is you have to wait for it to cool down enought to pick it up with gloves.....if you do it hot though, it will make it easier to weld the AN fitting to the thinner alum. overflow tank because it will take less heat from the torch to heat up the fitting.
downside to a preburn is you have to wait for it to cool down enought to pick it up with gloves.....if you do it hot though, it will make it easier to weld the AN fitting to the thinner alum. overflow tank because it will take less heat from the torch to heat up the fitting.
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