Flux cored arc welding level 1: My best welds were 3/16 inch tee-joints Overhead and horizontal gas/self shielded and a 1/2 inch butt-joint vertical up gas shielded. Another weld I did is 1/2 inch butt-joint vertical up self shielded. My roughest welds were 3/16 inch tee-joints vertical up gas/self shielded, that is because self shielded has too much spatter even with higher quality wire however gas shielded is a potential great weld because that weld was almost uniform, the problem is that it is difficult for me to maintain that weld due to preventing burn through by controlling stick out, the other problem is I don't have a picture of it. Flux cored arc welding advanced: I am not able to flux cored arc weld butt-joints with a backing bar because when I weld it the weld metal mixes with the slag and the result using a chipping hammer is that the weld chips mostly all the way down to the backing bar.