KubotainNH
Veteran Member
Voltage controls bead profile, not penetration.
Wire feed speed is your amperage and controls penetration (depth of fusion).
For a given wire feed speed, more volts flattens and widens the bead. But does not increase penetration.
But, volts too high gives erratic arc, excess spatter.
Volts too low and wire stubs into base metal and gives tall ropey looking bead.
Correct volts will be between.
This was very useful to me today. Not sizzling correctly, up the wire speed then some spatter so dropped the voltage. That's the sound I wanted.
I also heated the metal with a torch to get rid of any dampness. Love this forum.