My Dart Swinger Project!

George Jets said
The 4 Key Points of Welding:

Heat
Angle
Distance
Speed (of travel, and/or wire speed)

Coordinate all of these together and you can get perfect looking welds. Gravity plays a part too pulling on the molten puddle as you are moving along.

As Gearhed73 stated above, clean up the axle tubes before welding . . get the rust off. It will be a stronger more pure weld and won't spatter so much.
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The angles is something I'm having trouble with. I cant seem to be constant. What angle do you recommend? And how far away (how long my wire) should I be with the tip. About 3/4 of an inch seems to run a smoother bead but the closer I get the better i can see the puddle.