Torch type

[Daz1968]

I am currently doing a car restoration using 0.6mm wire, I have had a few issues with feed of the wire. I am using a mb25 torch which probably isn't best for this wire, would I be best to change to a mb15 torch or put correct liner for 0.6 wire in my current torch,

 

[gordon stephenson]

For your requirements I would be using aN MB 15 torch with 3 mtr length, you might get away with a 4 mtr if you need the extra length,

 

[NickyEng]

Mb25 is fine, m15 nozzle chokes up with spatter to easy. Especially when lying under a car...

 

[Daz1968]

Thanks, I presume a blue liner will make the wire feed better than the one supplied with an mb25

 

[PTvor]

Are you sure this is a problem with the torch and liner, not the rollers or the tension on the wirefeed etc? Rubbish wire can cause problems feeding. Is it a decent brand, precision wound and not rusty?

 

[Daz1968]

I am pretty sure it is in the liner or torch as it will fold between roller and tube at back of the euro connector if I increase tension, so it's past the roller where the problem is, for the cost of a liner I may as well try a blue one designed for this size wire as if I hold torch straight it feeds better. It's just frustrating when trying to make a decent weld, the torch itself is not very old so a liner is cheapest option to try first,

Thanks for advice

 

[Kent]

you know that solid tube to which you refer, just run through it with a small drill bit turning it by hand only, thing is they often get full of crud and the hole narrows. Straightening the torch will always get a smoother feed, if you have an issue at the rollers (have you checked your on the right groove) or the tube to which I refer or the liner is a bit shot straightening just gives it a bit back

 

[Daz1968]

Thanks will have a proper look when I change the liner and hopefully will be able to carry on with my project next weekend.

 

[wyn]

I am pretty sure it is in the liner or torch as it will fold between roller and tube at back of the euro connector if I increase tension, so it's past the roller where the problem is

The liner or tube needs to reach right up to the roller...you shouldn't have much of a gap to allow the wire to birds nest.

 

[NickyEng]

Yep try a blue liner then 0.6 - 0.8mm and see how you go.
If that doesn't help shoot a couple of closeup photos of your wire feeder assembly so we can take a look.

 

[Kent]

The liner or tube needs to reach right up to the roller...you shouldn't have much of a gap to allow the wire to birds nest.

Not all plants set up this way. Many use a rigid tube inbetween the liner and the rollers

 

[Woody.v8]

Not all plants set up this way. Many use a rigid tube inbetween the liner and the rollers

Exactly, with a euro torch the liner starts in the plug not the feeder.

 

[wyn]

Yes your right, that's why it says "liner or tube"

 

[NickyEng]

Not all plants set up this way. Many use a rigid tube inbetween the liner and the rollers

Yes all my mig welders have a brass rigid tube from the rollers to the euro torch connection

 

[Daz1968]

Thanks,

Will check everything when the liner arrives, have bought some new tips as well so hopefully will get it working correctly.

 

[Daz1968]

This is only picture I have of my wire feed, I know the motor is running fine, and when it does feed the weld quality is perfect for my needs. It's just sometimes it jams, if I adjust rollers correct it just slips which is what I would expect. It's only when I put too much pressure on I have problems at this end. Don't think I can get the tube any closer to wheel. Hopefully correct sized liner and new tips will solve it. The motor is an upgrade I fitted and is probably overkill for my needs but is working fine.

 

[NickyEng]

You haven't got too much tension on the reel holder or the feed roller tensioner incorrect
Did you straighten out the torch and squeeze the trigger, wire should just slip between finger and thumb

 

[Appyasme1]

Try knurled rollers, top pressure, bellow feed.

 

[Appyasme1]

Sorry,0.6mm wire is not layer wound, this is also a major feed problem.

 

[Daz1968]

Just to update this thread, I have now fitted a new blue liner and new 0.6 tip to my mb25 torch and it's like having a new welder, wire feeds very well and hopefully should now be fine to continue my project. Thanks for help