Plug Welding Rear Floorpan, What Settings to Start With Options

[motorvated]

Getting ready to pull out the gas shielded Miller wire feed MIG welder to plug weld my new rear floorpan into my '72. I'll be practicing on some scrap metal first, but would like some opinions on MIG settings to start with. Specifically shield gas pressure, wire feed rate, and current settings. Plus since the car is on jack stands, and I'll be welding overhead, any helpful hints on how not to get splattered, burned, or otherwise tortured while under there would be helpful. I have the shield, gloves, and I'll wear leather wherever possible. Don't have the luxury of a rotisserie for this one.

[CptTripps]

Yeah, it all depends on the welder. I find that there is no hard/fast rule for this stuff. There are just too many variables. Even things like the outside temperature and length of the extension cord can play. (At least in my experience.

Start with the least amount of amperage possible, and work with wire speed from there. You'll find the groove after 10-15 rosettes. Then the next 90-100 will be a lot easier.

Just make sure you move around a lot. (one side of the car to the other.) Just like when you torque down a wheel. one corner, then the opposite, than the opposite, than the opposite.

Also: If you can put the car at an angle at all, that'll help. If your jackstands are on the "3rd click" on one side, and "6th click" on the other, you'll have more of an angle. Just make sure you stay safe!

Not a fast job...but not a hard one either.

Good luck & take pics!

[motorvated]

Yeah, it all depends on the welder. I find that there is no hard/fast rule for this stuff. There are just too many variables. Even things like the outside temperature and length of the extension cord can play. (At least in my experience.

Start with the least amount of amperage possible, and work with wire speed from there. You'll find the groove after 10-15 rosettes. Then the next 90-100 will be a lot easier.

Just make sure you move around a lot. (one side of the car to the other.) Just like when you torque down a wheel. one corner, then the opposite, than the opposite, than the opposite.

Also: If you can put the car at an angle at all, that'll help. If your jackstands are on the "3rd click" on one side, and "6th click" on the other, you'll have more of an angle. Just make sure you stay safe!

Not a fast job...but not a hard one either.

Good luck & take pics!

Thanks for the recommendations. 30 psi for the gas seems a bit high from what I recall from past gas shielded MIG work, but I'll start low with my scrap welds and work my way up until I get a clean spot. The protect the ears thing is definitely something I will do! I will try to post some pictures this weekend of how it goes on the 100 or so plug welds!