What size Mig wire do most of you folks use. I'm running gas and most of the stuff being welded is .120 and .25 thichness. Thanks...

I use .030 wire in my Lincoln SP-175 Plus. Works well up to .250 thick.

BTW: I'm using a Millermatic 175.

I'm no expert but I like the .030 with 75/25 mix. Pretty flexible for most fabrication projects. I never switch to smaller stuff except for thin sheet. I also have a Miller 175.

I run a Millermatic 250X and use .035" mild steel wire on 75/25 mix. If I have to weld thin sheet I use a Lincoln Weldpack 100 with .023 on the bottle also.
Steve

very far from a pro but .030 with 75/25 has been working good for me so far. old school millermatic 35.

I run .025/.023 on my Lincoln 100 with the 75/25 mix...

only mig welder I got and don't currently need a bigger mig.

.035 for thick stuff and .025 for thin. stuff. The difference is like night and day. Feed wheels are cheap and are easy to change.

Im using a lincoln 200.

I'm runnin .035 with 75/25 on Lincoln 200. No need to go any bigger for .25" stuff.

I run .035 on my Millermatic 185 with 75/25 mix.

Normally .035. I just recently tried some .030, and like it for the thinner stuff, but prefer the .035 for thicker. .023 is nice for sheet, but I have trouble running it due to the 15' long lead on my gun; unless I really care about warpage on a particular project, its usually more hassle than it worth (on my particular setup).

I run mix gas on a Millermatic 35 that pre-dates me by a few years. :D

Pete

I use .035 wire and straight C02.......... I can weld 16 guage,
all the way up to 1/2 plate in a single pass. The gas only
becomes an issue at very high current/temps........And it only
provides for less weld spatter, the weld puddle is just as shielded
as if it were 75/25 mix gas........ Striaght C02 is alot cheaper
than mix gas...

--Sherpa

I run .035 ER70 S3 or ER70 S6 with a 75/25 mix on a Miller 185 for 1/8" - 1/2" material. This is equivelant to 7018 stick.

I run .030 for anything thinner than 1/8". I would run .023 if I could but it doesn't feed through my whip consistently.