For this video, I visited my friend JD Brewer. JD is a big fan of dual shield flux core welding also known as outershield, gas shielded flux core, and probably a few other slang terms. The main difference for JD is speed. He runs a welding business and anything that saves times also helps make him money. Dual shield flux core saves time because it allows for a fast travel speed and high deposition rate, and it also saves time in material prep. Very little prep is required for dual shield. It pen