Shield Arc
Super Member
Off the top of my head I can't think of any dual shield wires that don't run on DCEP. But I can think of at least three flux core self shielded wires that run on DCEP. Most of us weekend warriors won't be running any of them. 
Mig gas Bottle Questions
- Thread starter toxicjeeper
- Start date
- Views: 7199
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toxicjeeper
Silver Member
Definitly brought up a good point Scooby..I may cut my loss's on this wire and just get a spool of regular soild core with mig mix gas..Either way i will keep the info on lease big tanks and owned smaller ones at hand when i call praxair..
Sheilded arc. welder is cv-300 with an ln-7 feeder with the serrated rollers. Wire size is .045. I am not in a high production welding enivorment( altho i can lay some serious weight when required with this welder). I mostly just build trailers, splitters, fix stuff and general fabrication but recently have needed to have cleaner welds for cosmetic reasons..
Sheilded arc. welder is cv-300 with an ln-7 feeder with the serrated rollers. Wire size is .045. I am not in a high production welding enivorment( altho i can lay some serious weight when required with this welder). I mostly just build trailers, splitters, fix stuff and general fabrication but recently have needed to have cleaner welds for cosmetic reasons..
Shield Arc
Super Member
I've run .045 dual shield with V-goove drive rolls before with no problems. When I looked at your welder, I could imagine you running 1/16 inch or bigger.
In your case, put that dual shield away, and buy some Lincoln L-56, and some v-goove drive rolls for your LN-7.
http://www.tractorbynet.com/forums/welding/212146-mig-break-test.html
http://www.tractorbynet.com/forums/welding/237081-vertical-uphill-w-mig.html
In your case, put that dual shield away, and buy some Lincoln L-56, and some v-goove drive rolls for your LN-7.
http://www.tractorbynet.com/forums/welding/212146-mig-break-test.html
http://www.tractorbynet.com/forums/welding/237081-vertical-uphill-w-mig.html
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toxicjeeper
Silver Member
hmm..lots to think about now.. :thumbsup: Lots of good insight and help in this thread!
Shield Arc
Super Member
For general fab work you'd be hard pressed to find a better process than short circuit Mig welding with .035 wire. You can set your machine where it is just a tad cold for flat welding, and never change a thing and go right into vertical up welding. You should be able to build most projects without ever adjusting your machine!
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toxicjeeper
Silver Member
Bite the bullet and leased a 150 cf tank for 70 bucks a year. Same price to fill a 150cf tank as it was a 50cf tank. ( think that was mention somewhere already here too..)The only tank i could buy at praxair was a 50cf and it looked pretty small.. Had a 44 pound spool of soild core wire in hand when i mention to the clerk that i had a ton of outersheild 71m and he said that was better than what he was gonna sell me when used with gas.. So i am gonna use it with about 50cfh of gas and see what happens..
Scooby074
Super Member
The tanks look small... cause they are :thumbsup::laughing:
Since your running Outershield i think you made the right decision. If you find your not using that much gas, buy a tank next year.
Since your running Outershield i think you made the right decision. If you find your not using that much gas, buy a tank next year.
Shield Arc
Super Member
That seems high to me. I can't find it on Lincoln's site, maybe there is some info in one of the boxes? I'd try 40 to 45-cfh tops. Or call / e-mail Lincoln.
Outershield 71M
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toxicjeeper
Silver Member
Its under the adobe specs link recommends 40-50 cfh.. I got my wife to print out the voltage chart too for a reference..
http://www.lincolnelectric.com/asse...Shielded-Outershield-Outershield71M/c3101.pdf
Shield Arc
Super Member
Oh I see it now, said the blind man.
I always liked dual shield, to me you have the best of both worlds. I was the supervisor on this project. I elected to go with dual shield to weld the 10-feet dia, 1-inch wall pipe hanging on the hook of the crane. 100% xray, I forget how many splices the guys had to make on that project.
I always liked dual shield, to me you have the best of both worlds. I was the supervisor on this project. I elected to go with dual shield to weld the 10-feet dia, 1-inch wall pipe hanging on the hook of the crane. 100% xray, I forget how many splices the guys had to make on that project.
