Quote Originally Posted by 6g 7018 View Post
spray arc does not happen unless the shielding gas has oxygen in it and you can't use a shielding gas with oxygen in it when welding aluminun
Fishbum disregard this as it is pure BS. Also make sure your wire is not touching the work piece when you pull the trigger. With short circuit you can get away with it but when setup for spray you can get burn backs.