Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Welding

 
 
SFT Search:
Reply
 
Thread Tools Display Modes
  #11  
Old 05-29-2024, 10:37 PM
astronut's Avatar
astronut astronut is offline
Elite Member
 
Join Date: Jun 2019
Location: Louisiana
Posts: 2,315
Default

Quote:
Originally Posted by arizonian View Post
Yeah, not a Lincoln. Reverse and straight polarity are handled by the lever selector to the left of the mig gun stub.

On edit, digr, does your machine also handle mig?



See above. There is only one connection. Once again, this is an Airco machine, not a Lincoln nor a Miller. I need to take all the covers off and switch polarity elsewhere.
I had one a few years back, though a bit different on the face plate than what you are showing. And I assure you, the change could (and I did make the wire swap numerous times to switch between the two wire types) be made on my machine. I wish I still had it so I could take pics of what I am talking about so I could post them up. Mine may have not been a factory setup and "customized" by the previous owner. I have no way of really knowing.
__________________
I love the smell of napalm in the morning. It smells like, victory!
Rommel, you magnificent bastard, I read your book!
Still got the shovel!

Victor Torch Set With Meco Regs
Lincoln Weld Pak 100
Giant Tech Arc 200
Miller Roughneck2E
Reply With Quote
  #12  
Old 05-29-2024, 10:42 PM
arizonian's Avatar
arizonian arizonian is offline
Elite Member
 
Join Date: Jul 2007
Location: Tucson, Arizona
Posts: 2,326
Default

Quote:
Originally Posted by mccutter View Post
You could go to millerwelds.com and get a manual for it and see what they say. I've never been afraid to pull a cover off a Miller unit--they make it fairly easy. Maybe 10-12 screws, zipzipzip...
Thanks, I have the manual when I bought this machine new over 40 yrs ago. I have had all the covers off several times and not afraid to pull them again. It's now going to be a question of will I remember to reverse the switch if I do want to go back to mig welding from fluxcore.
__________________
Bill in sunny Tucson

I believe in gun control.

Gun Control: The ability to consistently hit what you are aiming at.

Weldor by choice, engineer by necessity.
Reply With Quote
  #13  
Old 05-30-2024, 01:22 AM
TEK's Avatar
TEK TEK is offline
Elite Member
 
Join Date: Jan 2006
Location: Hauser, Idaho
Posts: 3,137
Default

Now that we have that figured out, let me add this--

Not all flux core wire is run DCEN...

The popular structural steel field welding wires usually are, like Lincoln NR232, NR211, NR311and Hobart 21b.

Some shop wires, like Lincoln NR305 and NS 3M are run DCEP.....
__________________
"I was raised with you do things because its what you should do. I never expected anything in return."
-----DozerDan
Reply With Quote
  #14  
Old 05-30-2024, 11:12 AM
Shade Tree Welder's Avatar
Shade Tree Welder Shade Tree Welder is offline
Grumpy Bastard
 
Join Date: Jun 2004
Location: Kankakee County, IL
Posts: 23,118
Default

Quote:
Originally Posted by TEK View Post
Now that we have that figured out, let me add this--

Not all flux core wire is run DCEN...

The popular structural steel field welding wires usually are, like Lincoln NR232, NR211, NR311and Hobart 21b.

Some shop wires, like Lincoln NR305 and NS 3M are run DCEP.....
Interesting. I was always of the understanding that gasless FC was DCEN, and dual shield wire were generally DCEP, but looks like a few are DCEP.

"Polarity
Most Innershield electrodes operate best on direct current electrode
negative (DC-) or “straight” polarity. Note that this is opposite of all
gas-shielded flux-cored, solid (i.e. MIG) and metal-cored electrodes,
which operate best on direct current electrode positive (DC+) or
“reverse” polarity. In addition, even a few of the Innershield
electrodes also operate best on DC+ polarity (e.g. Innershield
NS-3M, NR-305, NR-5). "

https://ch-delivery.lincolnelectric....f45?v=405651b4
__________________
Shade

"Prepare to defend yourselves."
-- Sergeant Major Basil L. Plumley, Ia Drang Valley
Reply With Quote
  #15  
Old 05-30-2024, 02:41 PM
TEK's Avatar
TEK TEK is offline
Elite Member
 
Join Date: Jan 2006
Location: Hauser, Idaho
Posts: 3,137
Default

[QUOTE=Shade Tree Welder;800707]Interesting. I was always of the understanding that gasless FC was DCEN, and dual shield wire were generally DCEP, but looks like a few are DCEP.

" In addition, even a few of the Innershield
electrodes also operate best on DC+ polarity (e.g. Innershield
NS-3M, NR-305, NR-5). "



I recall that we used to use hardfacing wire, Lincore 55, that was also run DC+...
__________________
"I was raised with you do things because its what you should do. I never expected anything in return."
-----DozerDan
Reply With Quote
  #16  
Old 05-30-2024, 09:11 PM
LKeithR's Avatar
LKeithR LKeithR is offline
Hey...wait...is there a prize?
 
Join Date: Aug 2011
Location: Langley, B.C.
Posts: 5,734
Default

Quote:
Originally Posted by Shade Tree Welder View Post
Solid wire is DCEP (DC electrode positive)
FC wire is DCEN (DC electrode negative)
I think Shade's problem is that, like me, he's getting old and remembers a time when things were more simple and straightforward. The idea that solid wire is positive and fluxcore is negative is pretty much how I remember things. However, even though we actually ran very little fluxcore I have noticed that some of the newer wires don't necessarily follow the rules. You pretty much have to look to see what the manufacturer recommends for any specific wire...
__________________
Keith

Measure twice and cut once...or...wait, was that the other way around?
Reply With Quote
  #17  
Old 05-30-2024, 09:13 PM
Shade Tree Welder's Avatar
Shade Tree Welder Shade Tree Welder is offline
Grumpy Bastard
 
Join Date: Jun 2004
Location: Kankakee County, IL
Posts: 23,118
Default

Quote:
Originally Posted by LKeithR View Post
I think Shade's problem is that, like me, he's getting old and remembers a time when things were more simple and straightforward. The idea that solid wire is positive and fluxcore is negative is pretty much how I remember things. However, even though we actually ran very little fluxcore I have noticed that some of the newer wires don't necessarily follow the rules. You pretty much have to look to see what the manufacturer recommends for any specific wire...
Yuppers.
__________________
Shade

"Prepare to defend yourselves."
-- Sergeant Major Basil L. Plumley, Ia Drang Valley
Reply With Quote
  #18  
Old 05-31-2024, 10:34 AM
dubby's Avatar
dubby dubby is offline
Twice the size--half the man
 
Join Date: Apr 2006
Location: Lubbock, TX
Posts: 10,599
Default

I solved all that remembering hassle by not using my welder. It has the same wire that I last set it up with correctly inside still, and should last me a few more years until I need to change
__________________
I've always had more time than money.

Wade's Custom Kydex
Reply With Quote
  #19  
Old 06-03-2024, 07:36 AM
randydupree's Avatar
randydupree randydupree is offline
Why, Hell Yes!
 
Join Date: Aug 2005
Location: Bainbridge Ga
Posts: 6,761
Default

Quote:
Originally Posted by arizonian View Post
Welp, switching polarity on the wire feed side of this machine will entail taking the covers off and monkeying with the internals. It can be switched from DCEP to DCEN easily on the stick weld side by selecting the position.

For those that have experience with an Airco Dipstick 160 knows how it goes. IIRC, Randy Dupree is very familiar with these machines.
I used to be familiar with them!
My last dipstick died in 1989,i am sure i have forgotten everything about them.
Reply With Quote
  #20  
Old 06-05-2024, 12:04 PM
chumly2071's Avatar
chumly2071 chumly2071 is offline
Urban Gunfighter
 
Join Date: Jun 2004
Location: IL, south of Shade Tree Welder
Posts: 2,862
Default

Quote:
Originally Posted by arizonian View Post

For those that have experience with an Airco Dipstick 160 knows how it goes. IIRC, Randy Dupree is very familiar with these machines.
I used to have one of those. was a heck of a machine.
__________________
Tool junkie with a Jeep problem...


"I am a man of peace, but if war comes to my door it will find me home."
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 03:22 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.