Welding Tips and Tricks

How often should you replace a liner on a mig machine or flux core machine. Is there a certain amount of feet of wire, years, pounds of wire? Any suggestions would be appreciated.

From my experience, the clue is when the cable is coiled a little and feeding problems occur - then go away if you straighten the cable.

This means it's starting to build up junk inside and you need to replace the liner.

Liners last a looonnnggg time if you care for them properly. Make sure your whip is as straight as possible when you weld. Use a wire cleaner near your feed rollers and don't use wire that you find in the garbage can and keep your shop as humidity free as you can. I welded almost every day for 4 years with a Miller 250 mig machine and never changed the liner.

When I worked production we changed liners after using about 3-4 400# spools. So between 1200 and 1600 # of wire. That was if you used the felt pads without the cleaner. By the time you changed out 2 liners you also had to change the brass guides in the feeder.

BY the way, old liners make great flestaruses.

exnailpounder wrote:BY the way, old liners make great flestaruses.

When you make those, do you twist the ends in opposite directions or pull them apart to stick it together?

PeteM wrote:

exnailpounder wrote:BY the way, old liners make great flestaruses.

When you make those, do you twist the ends in opposite directions or pull them apart to stick it together?

I usually twist the ends like a sheepshank because it fits in the debronolver better. Opposite is good but sheepshank is better

Google just blew up

OP,

I think these clowns are taking the piss. WTF is a flestarus, sheepshank or debronolver. What's next, headlight fluid, exhaust bearings?



As for your original question re liner, save your time and ditch it altogether and install a retro encabulator instead.

https://www.youtube.com/watch?v=RXJKdh1KZ0w

Rupes wrote:OP,

I think these clowns are taking the piss. WTF is a flestarus, sheepshank or debronolver. What's next, headlight fluid, exhaust bearings?



As for your original question re liner, save your time and ditch it altogether and install a retro encabulator instead.

https://www.youtube.com/watch?v=RXJKdh1KZ0w

I have a retro encabulator. I love it. I thought I was never gonna get that goddamned salesman out of my shop though.

exnailpounder wrote:Google just blew up

Its going to cause an asymprosious in their Boolean prime manifold.

Rupes wrote:OP,


As for your original question re liner, save your time and ditch it altogether and install a retro encabulator instead.

https://www.youtube.com/watch?v=RXJKdh1KZ0w

Bookmarked! I've been looking for that vid for a couple of years but couldn't remember the manufacturer.

I've been working on a linear drive system that will find positions in the ( I^1/2) segment of sections and need that to satisfy the permutation of the formula between the optical encoder and the control board.

Thanks.

If you need something smaller you can always go with a micro encabulator

https://www.youtube.com/watch?v=u4ILnWpi8XY


Naturally the price point increases when powered by the modial interaction of the capacitive distractance and magneto-reluctance as most models currently are.

Turbo Encabulator is better

https://www.youtube.com/watch?v=Ac7G7xOG2Ag

I don't care how they measure it, side fumbling is still a problem.

In Aus people use old mig liners to catch bardi grubs out of their holes. Unwind the end into a corkscrew and you are grubbin.

Getting back to liners.

I have had an ugly xp with them. Once upon a time I switched to another Lincoln Powertec 360S, if I remember correctly machine and was annoyed to death -> start to weld, works well, after some short time wire melts to the tip, or melts with huge drops slowly. First idea was, new wire has inconsistent diameter, measured did not find any excess microns.

I did not know back then that my movements with hose caused the problem.

Liner inside was bent in many places, coating broken and missing in places, all those turns caused friction and least hose bending slowed down wire feed.

Changed the liner, dark clouds disappeared.

Dirt prevention, take a piece of cloth and pierce it on the wire right before wire enters feeder rollers(before conic hole), collects some dust/dirt from spool. It is not a good idea to roll back wire from hose.

For a wire wiper I use 2in square pieces of felt from a boot insole clipped on. I also bought a package of kids socks from the dollar store which I fill with Tidy Cat kitty litter ( said to be a very good desiccant ) and place one in the bottom of the welder cabinet . Last summer in SW Ontario we had a few weeks of super hot and humid weather -metal stuff started to rust so I also had to buy a dehumidifier. Not really sure how well the desiccant works but can't hurt. Whenever I put on a new spool I blow out the liner with compressed air. I also installed a pernifenschoton just prevent any more hyphlnuten on the exterior salferenzen.

Oh no. Its back to hello kitty again.

My second hand mig had its original liner, almost totally clogged, kinked in two places and even had corrosion like salty stuff on it. Trip to the local welder repair man, who stocks lots of spares for random old migs, and away we go.

homeboy wrote:For a wire wiper I use 2in square pieces of felt from a boot insole clipped on. I also bought a package of kids socks from the dollar store which I fill with Tidy Cat kitty litter ( said to be a very good desiccant ) and place one in the bottom of the welder cabinet . Last summer in SW Ontario we had a few weeks of super hot and humid weather -metal stuff started to rust so I also had to buy a dehumidifier. Not really sure how well the desiccant works but can't hurt. Whenever I put on a new spool I blow out the liner with compressed air. I also installed a pernifenschoton just prevent any more hyphlnuten on the exterior salferenzen.

I get hyphlnuten when my carbon monoxide diffuser falls below 16 lh/3m sq. Just watch your miilibar rating and you should be ok.

Hey Farmwelding! You never said if we answered your question Get used to it grasshopper

exnailpounder wrote:Hey Farmwelding! You never said if we answered your question Get used to it grasshopper

Well I think it doesn't matter since we don't run a lot of wire through the machine. And grasshopper? Really. Please I can't jump worth anything. And I am kind of used to it now.

Wow. This thread took a left turn. I can't believe I actually read everything and watched one video. That's like 4 mins of my life I won't get back.

Anyway, to the question, when we are really busy we usually replace our liners once a week to two weeks, as per out maintenance schedule. We can run around a spool of wire through them a day (44 lbs each) when cooking. Overkill for sure and the liners have life left in them but we don't want the failure and the downtime of repairing expensive parts because of a $15 part. At home, I've only replaced my liner once in the almost 6 years I've owned my Miller 252 but I don't run near the amount of wire through it. Give it a good blow out and even take it out to clean it and it should last you years. If the wire starts catching or the liner becomes suspect in any way just replace it. Always keep a extra on hand as well. The problem always seems to creep up late at night or the weekend.
-Jonathan
-Jonathan

Superiorwelding wrote:Wow. This thread took a left turn. I can't believe I actually read everything and watched one video. That's like 4 mins of my life I won't get back.

Anyway, to the question, when we are really busy we usually replace our liners once a week to two weeks, as per out maintenance schedule. We can run around a spool of wire through them a day (44 lbs each) when cooking. Overkill for sure and the liners have life left in them but we don't want the failure and the downtime of repairing expensive parts because of a $15 part. At home, I've only replaced my liner once in the almost 6 years I've owned my Miller 252 but I don't run near the amount of wire through it. Give it a good blow out and even take it out to clean it and it should last you years. If the wire starts catching or the liner becomes suspect in any way just replace it. Always keep a extra on hand as well. The problem always seems to creep up late at night or the weekend.
-Jonathan
-Jonathan

Funny you should respond. You are the reason I asked because I was listening to the podcast and was wondering: should we change the liner at school on our 252. Good to know especially with the same model