Hi All. Happy new year to everyone.
I posted for the first time in November and you were very helpful. Hopefully you can help me again. I’m new to welding and am slowly getting better at it but I’m having a problem with either my welder or my technique.
I have a second-hand Millermatic 175 and am using solid .24 wire. All parts/accessories are clean and in good working order. I’m trying to plug weld drilled out spot weld holes in clean and prepped 20-gauge sheet metal. My C-25 gas is set at 17 and my voltage/wire speed at 1/40 (the chart on my machine only goes to 18 gauge and calls for 1.5/40).
When I pull the trigger, I get a couple of seconds of good, bacon sizzle welding but then it shifts to a sound like a bottle rocket taking off causing it to “flare” and burn through (or, in this case, melt the edges of the holes).
I’m not convinced the voltage/wire speed has anything to do with it as this consistently happens no matter what they’re set at (but I certainly could be wrong). I’m wondering if there’s a problem with how the gas is being dispensed.
Hopefully this makes sense. Any help will be greatly appreciated.
I posted for the first time in November and you were very helpful. Hopefully you can help me again. I’m new to welding and am slowly getting better at it but I’m having a problem with either my welder or my technique.
I have a second-hand Millermatic 175 and am using solid .24 wire. All parts/accessories are clean and in good working order. I’m trying to plug weld drilled out spot weld holes in clean and prepped 20-gauge sheet metal. My C-25 gas is set at 17 and my voltage/wire speed at 1/40 (the chart on my machine only goes to 18 gauge and calls for 1.5/40).
When I pull the trigger, I get a couple of seconds of good, bacon sizzle welding but then it shifts to a sound like a bottle rocket taking off causing it to “flare” and burn through (or, in this case, melt the edges of the holes).
I’m not convinced the voltage/wire speed has anything to do with it as this consistently happens no matter what they’re set at (but I certainly could be wrong). I’m wondering if there’s a problem with how the gas is being dispensed.
Hopefully this makes sense. Any help will be greatly appreciated.
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