There are several advantages to using SAW which include:

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As with any technique there are a few limitations with the SAW method that include: * You are limited to only a few positions that you can use this within. * You can only use steel, stainless steel or a few nickel based metals. * The flux handling systems can be more complex and difficult to use. * Slag is a problem in a couple of ways: you can get residue from it that may cause some issues with your health or with safety and it will require a complicated slag removal system.