tweake wrote: ↑Fri May 31, 2024 2:42 am try the gas cylinder on another machine. could simply be bad cyl of gas.

That was my first thought seeing it was the only change.

I was using my machine, Kemppi 2300 Mastertig this morning in the workshop and everything was working perfectly, but I needed to move it all to another location for a different job. The workshop cylinder is large so I rented a smaller one. Once moved, everything is set to go with cylinder connected,...

bap_ wrote: ↑Sat Oct 16, 2021 10:53 pm What is your budget?

Fronius has some pretty nifty stick machines that don't even need leads.

The thud you heard was him hitting the floor after seeing the price.

If the tinplate I weld at work is the same as what your calling zinc anneal then I find the backside and HAZ become prone to rusting since the zinc/tin burns off during the weld. All we've ever done is post welding we'll sandblast and prime the whole part since it gets a coat of black paint once co...

Just would like an experienced expert to explain what I could use it for... Ideally I'd like to be able to weld Carbon Steel and Aluminium WITHOUT gas... Is this remotely possible with what I have purchased.. TIG welders will do stainless and aluminium, but not without shielding gas. If it also has ...

[/quote] Wow over 30lbs difference huh? I plugged it into a gas volume to weight calculator and got the same result, I always just figured the things felt heavier on the trip back home than loading them into the truck because I was already dreading doing it a second time after having to do it once e...

Forming a habit counts for a lot in anything you do, which is why Jody goes on about muscle memory. It's real and the only way to develop it is with a lot of repetitions ie. forming a habit. Think of how difficult it is to undo a bad habit, therefor try not to develop them in the first place. I fond...

Has anyone welded zincanneal? I've got a gable end vent which is out of zincanneal and it was installed around 15 years ago. It's about 1mm sheet and I didn't make it but the welds are small so I am assuming tig welded. I can see that there is rust on the welds inside and, unsurprisingly, nothing ot...

"yeah, thats kinda important especially if you or your customer has forked out the extra $$ for 316"

I put these together out of off cuts, it'll only be for internal installation and it is for my own use, but yes also don't like wasting my own time.
Need now to investigate pickling paste.

Citric acid may work if you leave it long enough but not let it dry out. I have not tried it for pickling but it works enough for etch tests. Pickling paste is usually the go to though. I think its a matter of what the acid is actually doing and if citric would be strong enough. I think it would be...

not sure what your asking. alterative to what ? I decided to pre-finish the parts before welding in the belief or hope I could make it work, but realise now that pickling/passivation is the only way this can work. So how about the citric acid treatments and is this the same as food grade citric acid...

I'm doing a few small components with 2 parts welded together from 316 stainless and pre-finished before welding with a 320 grit belt. It's a 20mm tube fitted at 90deg into a 6mm plate. Now of course there is the colouration after. So other than pickling are there straight forward alternatives? I wa...

Sounds like a battery problem.

There is no pulse actually, the settings are at the end of this video. https://streamable.com/9rmvqz I've been in contact with support, luckily it is still in warranty. Only 3 years here in Canada. My tungstens are all pretty good, I snap off contaminated ends before regrinding. I'm using 2T, as a ...

Not sure if it applies or not but, I chased a intermittent gas leak on my old Lincoln precision tig 185. Wound up being a threaded connection that wiges loose on the dinse block connect that was under the plastic cover on the dinse block. Figure I'd mention in case something weird like that applies...

kiwi2wheels wrote:This is the clamp type you need .

https://www.amazon.com/Oetiker-15400039 ... B076G6WWC8

Yes, I think you're right there, but I don't believe that's my problem.

Porosity problem is back! What I noticed this morning is when doing a 20 second gas test with the flow meter set at my close to usual 7Lpm, as the gas flows it starts rising up to 11Lpm. What? My welder is a Kemppi MasterTig 2300 which has a push-on fitting for the gas hose at the back. Needs the so...

Ok. Come back when you can show us some decent welds in mild steel.

Nice to have a challenge, but how about practicing on the easy stuff first. I wouldn't be starting on thin material. Or on stainless!

Definitely something to consider. Another thing that just occurred to me, is the porosity was happening sometimes a little at the beginning but mostly at the end, in both cases at the edge of the material, a 90deg drop away from the weld plane, so another pointer to gas coverage. Glad you found the...

I agree most times I would think it'd be a argon leak. But my brain says there's a chance depending pressure and type of leak etc that the line could potentially make a Venturi and draw air into the stream. I figure the moon and stars would have to aligned just right for that to happen though just ...

Perhaps the threads on the regulator or the internal threads on the tank valve were compromised somehow, and the teflon tape did indeed help? Tough to say, but so long as it's fixed that's all that matters. I actually had to do something similar with a couple acetylene tanks. They were swaps and ha...

I've done it before using the PTFE thread tape at the regulator to cylinder connection, so took it apart once again, replaced the o-ring and added more tape. Also, removed hose from the gas flow meter, cut the end off it and put on a new hose clamp, including tape on the barb. You shouldn't need ta...

glad you found the problem . The "air leak" was where, so others can look also when they get problems? I'm "assuming" the problem was at the bottle connection since that is the "only" place you made a change? Your assumption is correct, not my half-arsed deductions. Se...

After going in circles, it was an air leak, so fixed now, until next time.