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Gromit
What is the connection at the unit end?
I have an old (taking up space) torch with 3 or 4m whip (can’t remember) Euro fitting from a Lincoln PowerMIG
It’s a 250A torch
Has a bit of burn through on the neck which you’d need to fix to prevent entraining air into the gas mix.
I was in middle of a build and needed to be up and running so bought a new 300 or 350A torch
Anyways if you want it
It’s yours happy to post
S
Thanks for the offer.Quote:
Originally Posted by roverrescue
The gas valve is in the handle so I'd have to add a separate valve.
I'll probably just move to the Unimig and try a few more suppliers for a suitable liner for this old welder.
Colin
Just a thought:
You can get 2x1mm tubing, and you can get 4x2mm tubing .. could you get lengths of each and try to insert the 2mm OD tube into the 4mmOD tube to make it double tubed?
Can imagine it'll be hard to do over the length of the torch hose, but maybe some slippery stuff(water/soap, or WD or whatever to help it reduce friction)
Had a quick search and there is a mob that seems to offer various sizes of tubing in the UK.
4x1mm was one of the options.
Dunno where to get or how to order, but I'll post the link to what I'd found.
Valpar Industrial.
I did a search for pneumatics.
I guess the other option is to find a pneumatics supplier and see if they have anything.
Actually, scratch that.
Did a search on the bay and found a 2x1mm tube supplier(in NSW), went back to find them again and got lost in the mire, but found this shop(in WA) instead .. with an option for 4x1mm tube .. among many incrementally small alternative options to boot.
Ebay link
Not cheap tho!
EDIT: go to their shop, they also have other options for material types as well. eg. viton and PTFE too. Not quite the 4mm OD you wanted, and those options come in 3x1mm, but I'd reckon the other two material types would be stronger and less prone to heat damage(mainly at the tip end).
Didn't see nylon as an option too.
Hi Arthur,Quote:
Originally Posted by AK83
I really need PTFE for the heat resistance and slipperyness, the torch end (beyond the gas valve) is spiral wire so I need it from the wire feed to torch (2 metres).
Most welders use spiral wire for steel and PTFE for aluminium but this DIY welder uses PTFE for steel.
I'm in the Pneumatics business and can source most sizes of tube but it's not often you need PTFE and such a thick wall thickness is unusual anyway.
Maybe 2mm OD with a short section of 4mm pushed over the end where it goes into the push fit pneumatic fitting. Wonder if it might be a bit floppy and move inside the umbilical cord as the wire pushes through ?
Colin
Yeah, thought PTFE was the go, have a look at the ebay link, that seller(in the store, not the listing I posted) has PTFE in a similar size(3x1mm).
Looks like $18/m
Note sure how the 3mm OD would work at the end for 'ya.
Arthur,Quote:
Originally Posted by AK83
I found a steel wound liner listed for the 'Snap-On 130' which is another name this welder was sold under.
I've ordered one of them and I'll see whether it fits OK.
Also found what might be the correct PTFE liner from the UK listed as Snap-On 130 & Cebora 130. Might be an option if the steel wound one doesn't work out.
Colin
Ebay to the rescue.
Steel wound liner arrived today, OD was under 4mm so it wouldn't grip in the pneumatic fitting at the torch end so I fitted some heat shrink over the end.
Installed, cut to length, clamped.....works much better than the old PTFE liner.
Another job off the list.
Colin