I'm trying to mig weld two piece of 2-3 mm stainless steel sheets together, but I keep burning holes through the metal. I'm using a mix gas of 82/18% argon/co2 with the lowest setting on my welder, but without success. I've heard that 100% argon is better with thinner material, but I'm looking for a cheaper solution. Will it help if I changed to flux core wire with the mix gas I already have, or does anyone know another clever way around this?