my 110v mig has reverse polarity control and i was wondering if i were to reverse it would i be able to lay an actual bead on thin sheet metal? i need to do some thin stuff and tacking it every inch or so works but its a bitch to grind smooth. any help would be appreciated

 

Reversing polarity is for using Flux core or MIG wire. My lincoln listed that in the manual.

 

also if you add tig gun to your mig you can weld aluminium with reversed polarity. =)

 

Can you explain this a little more?

Sorry if that sounds like a complete noob thing to ask but I just recently bought a welder and I'm leaning the hard way. The polarity on my welder can be reversed but like the other guy said 'the book' shows doing that when switching between flux core wire and mig wire with shielding gas. Any help would be greatly apprecitated here. Thanks

 

i can make my mig a tig

 

you can make an arc a tig but im pretty sure not a mig into a tig. anyway read your manual, 2 polarities are there for flux core/mig/aluminum

 

I also haven't heard of making the MIG into a TIG.

 

Its for welding aluminum. I’m pretty sure that you cant change a mig to a tig and i think you mean a spool gun, a spool gun is for when you are welding ammonium so that the soft wire doesn’t get stuck in the wip.

 

about converting mig to tig. you have just do "downgrade" your mig. remove spool and other mechanics for wire and connect tig gun to it. it's same as converting arc to tig =) but it's just theory. i am about doing it. i've already bought tig gun with rods. i am looking now only for nice connectors, etc. =)

 

lol, you cant add a TIG gun to clear that up for everyone.
What he meant is you can add a spool gun which holds a spool of aluminum wire in itself.
Aluminum wire is to fragile to go through the entire spool system of a regular mig, so they made a gun specifically for aluminum.