Well done, that does look a lot better!
I think your next practice should be a butt weld between two pieces of 2mm sheet steel, about 4" long ( a.k.a. a "coupon" ). First tack them together at each end of the weld path. You can experiment with no gap ( esp. for thinner metal, e.g. 1mm sheet ), or try leaving a slight gap between the two pieces. Check the back of the joint to ensure that you have enough penetration, and try bending the joint apart to confirm it's strength.
Have you tried both options for the angle of the torch tip from the vertical? It can be tilted 10 or 15 degrees towards ( "drag" or "pull" ) or away from ( "push" ) the direction of travel along the weld path. With solid wire and argon mix or CO2 gas, both options are possible. For fluxcore, the saying is "if there is slag, you must drag". So you will drag or pull the tip away from the molten weld pool, to avoid any inclusions of slag that is deposited by the flux in the wire.
I think your next practice should be a butt weld between two pieces of 2mm sheet steel, about 4" long ( a.k.a. a "coupon" ). First tack them together at each end of the weld path. You can experiment with no gap ( esp. for thinner metal, e.g. 1mm sheet ), or try leaving a slight gap between the two pieces. Check the back of the joint to ensure that you have enough penetration, and try bending the joint apart to confirm it's strength.
Have you tried both options for the angle of the torch tip from the vertical? It can be tilted 10 or 15 degrees towards ( "drag" or "pull" ) or away from ( "push" ) the direction of travel along the weld path. With solid wire and argon mix or CO2 gas, both options are possible. For fluxcore, the saying is "if there is slag, you must drag". So you will drag or pull the tip away from the molten weld pool, to avoid any inclusions of slag that is deposited by the flux in the wire.
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