im trying to make a head board out of 6061 aluminum. the metal thickness is 1/4 to 1/2 inch. the welder im using is the diversion 180 by miller. but when i prep the joint clean tight fit and start to weld my 6061 rod balls up and melts before i can get it in the puddle, then my base metal starts to melt. my torch angle is right, my rod and gas is right. the only thing i can think of is that i need a bigger rod or i need a bigger tig welder. my welder can only weld max at 3/16 in. can any one help.

my welder

my welder

Input Power |
115/230 Volts, 1-Phase, 50/60 Hz |

Rated Output | 150 Amps at 16 VDC, 20% duty cycle (230V input) 125 Amps at 15 VDC, 35% duty cycle (115V input) |

Welding Amperage Range | 10 -180 Amps (230V input) 10-125 Amps (115V input) |

Net Weight | 50 lb (23 kg) |

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