Question: what is the difference between argon and argoshield?
Answer: Argon/CO2 Mix vs BOC Argoshield Light Argoshield Light is approximately 93% Argon, 5% CO2 and 2% oxygen. The oxygen in Argoshield is supposed to improve wetting and make the weld smoother, and indeed the weld made using Argoshield is very slightly smoother than the other weld.