Is this MIG wire even usable?

   / Is this MIG wire even usable? #12  
Any feedback would be appreciated.
Your ad looks good to me:thumbsup:. If / when you sell it, if you get any complaints about the wire worm tracking. Couple things that can cause this.
First is, wrong stick out length. Some manufactures suggest 3/4", some as much as 1 1/2". You have to read the spec sheet.
Second, dual shield is notorious for picking up moisture:thumbdown:. The manufacture will have criteria for heating the wire. Some can, some can't!
 
   / Is this MIG wire even usable?
  • Thread Starter
#13  
Thanks.

Final question! My dealer is trying to talk me out of the NR-212, instead he wants to sell me Select-arc 700GS wire. I noticed that this wire is limited in plate thickness to 3/16" and the dealer didn't know if the wire could be multi-passed. I called Select-Arc and asked the question and they quickly pushed me away from the 700GS (E71T-GS/E71T-14) wire because that was a consumer wire for lower power machines. Instead they recommended their 701 (E71T-11). Of course my dealer doesn't have 701 in stock and he can't price it over the phone. Starting to not be impressed. Anyways, the 701 is not available in a .035, it's .045 or 1/16" and bigger. My machine is already set up for 1/16". Should I get the roller, liner, tips, etc for the .045 or screw it and just go 1/16"? My goal with the flux core is to weld heavier sections outside. I already have several spools of .035 and gas. What I don't have is the flowmeter. This is starting to frustrate me because I wanted to burn this weekend and I'm headed to not being set up.

Tweco vs Bernard? Tweco is less than half the cost of the Bernard.
 
   / Is this MIG wire even usable? #14  
Cord I never ask the guys at the welding supply for advice. I've known one guy there for almost 30-years. Great guy, but doesn't know sheet about welding.
Before the Northridge earthquake in California the manufactures didn't put thickness limits on their wire. I think Hobart says the limit on 21-B is 3/4". I can't tell you how many 1" side bend tests I've passed with 21-B.
You might get away with using a regular Mig gun for shelf shielded wire up to about .045". Any bigger wire and you will need a flux core gun. And don't be surprised if you have trouble with .045" wire if you run real hot.

Last summer I found a roll of NR-211 in my Dad's barn that I took off a job in the early 1980s. Over the years several welding inspectors told be they never seen anybody pass a bend test with NR-211. So I had to give it a try:D. This wire even had rust on it:eek:.
 

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   / Is this MIG wire even usable? #15  
Oh, I forgot!:eek: I've never used a Bernard gun. I hear they are great guns tho. I've used Tweco guns since the early 1970s, never any trouble out of them.
 

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   / Is this MIG wire even usable?
  • Thread Starter
#16  
Bought some 212 off line. I'm done messing with this. 1/16" wasn't available, but I bought some .068 which is darn close. I'm guessing the existing 1/16" liner and feed rollers will be Ok, but should I find a .068 tip or just use the 1/16" that I have on hand?
 
   / Is this MIG wire even usable? #17  
Are your drive rolls serrated? I think some of my drive roll are good for something like .010" difference.
Far as the contact tips, I would try them, if the .068" wire won't feed through the 1/16" tips, take a torch tip cleaner and open them up just a few thousands.;)
 
   / Is this MIG wire even usable?
  • Thread Starter
#18  
Yes, the bottom roller is serrated. Both rollers on this feeder are driven.
 
   / Is this MIG wire even usable? #19  
With that big of wire you might need a flux core gun. I've always had good luck with Lincoln's K-126 guns. But you have to make sure you order a gun with the proper back end to fit your wire feeder.
 

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   / Is this MIG wire even usable?
  • Thread Starter
#20  
I know the prior owner was running 1/16" build up wire through the mig gun. I think what might be controlling the heat is that the gun is a 400a Tregakiss. Sure would like to lose the nozzle though. I'll probably keep it on because it's helping to protect the diffuser from splatter.

I don't know what the back end is. Bernard says that it's supposed to be a Tweco #4, but it doesn't look right. Almost looks like a Miller back end.
 

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