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1947 2-ton dodge truck built by T. and J. Richards and Sons.

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1 month 6 days ago #255178 by Mrsmackpaul
Welding is a art, it takes a lot of practice and failures and studying what works and what doesn't work

Am I a qualified welder ?

No but I have welded plenty of very heavy duty things up that cop a fair pizzeling

Early on in the piece things were not as successful as later on
I weld road train ring feeder brackets in and draw bars etc
As well as earth moving gear and so on and rarely have any failures

Lots of practice and study what works and what doesn't is the key

Plenty of amps and really really watch your weld

A good very clean mask

And weld in the shade so you can see whats happening

Paul

Your better to die trying than live on your knees begging
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1 month 5 days ago #255184 by mammoth
What Paul says. Using auto darkening helmet means that you can use your reading glasses (if you usually use corrected vision). Play with the darkening adjustment until you can see what is happening with the molten pool. Looks like you are not getting much penetration so turn up the amps. On a job like the the post hole digger have the two parts say 2mm apart and you are using your arc to bridge the gap. For mig gas flow should be set at around 14.
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1 month 5 days ago #255187 by cobbadog
Yes, more amps/ volts depending whether your arc or mig welding. Slight gap between the materials to be joined.

Watch some YouTube videos to get an idea of the welding pattern. Some use a U shape/style movement some do continuous eeee style. Use what your comfortable with n works.
Some drag the weld puddle some push it (welding let to right or vice versa). I find pushing works best for me as i can see the puddle . 

Cheers Cobba & Cobbarette
Coopernook, The Centre of our Universe
Working on more play time.
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1 month 5 days ago #255190 by Zuffen
Welding is all about practice and taking your time cleaning the metal and getting it in the right spot.

If you're lucky you eyes will be good enough to see what you're doing. Eyes are my downfall.

If you can't weld well, learn to grind well!
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1 month 5 days ago #255191 by wee-allis
This is for the expert welders on here to have a laugh.
Tthis week I had the dubious pleasure of having to cut the top out of a fuel tank from my 39 Vauxhall to clean it out.
Being out of practice and the metal soooo thin, I started with the mig. Blowing holes and making a mess. Revert to the tig, which I am beginning to learn. Not much better.

Time to bring out my old favourite, oxy. Now I know it causes a lot of distortion, but it was sort of working but not very tidy.

Last resort, back to the mig on "spot" and stitch away. That got the job done but after all the combined earlier attempts, it was bloody messy.
Angle grinder with "flap wheel" to tidy it up then a coat of brass over the top to seal in any pin holes in my welding.
Done.
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1 month 4 days ago #255193 by 180wannabe
Something i find extremely important, but often overlooked, is the connection/conductivity of the earth clamp to the work.  You can only get as much power at the weld, as the earth connection will conduct.

I find the standard manufacturer supplied spring style earth clamps are often barely adequate, and instead prefer a threaded G-clamp style earth clamp, secured firmly to a freshly cleaned surface.

Brett.
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1 month 4 days ago #255194 by asw120
Yes, I hve to replace / reterminate my earth clamp. It was burning hot after only a few minutes.
I had to weld up next door's cutting deck.

Jarrod.


“I offer my opponents a bargain: if they will stop telling lies about us, I will stop telling the truth about them”

― Adlai E. Stevenson II
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1 month 4 days ago #255195 by cobbadog
we allis,
I was a much better oxy welder than what I use now althogh the mig side is still improving thanks to that box trailer rebuild. 
With doing light metal I learnt when doing p-anel beating that a wet rag at hand is the answer to distortion. Plus numerous small tacks an inch aprt we were told to do but slightly closer worked better for me but all the time a quick wipe across the tack with that wet rag.
Now there are tiny T clamps that hold the metal level and with a small gap, do the tack and undo and twist the clamp and it comes out.

Cheers Cobba & Cobbarette
Coopernook, The Centre of our Universe
Working on more play time.
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1 month 4 days ago - 1 month 4 days ago #255198 by Mrsmackpaul
All of the above is the go, but I reckon the most important thing is to really concentrate as in the beginning I would get the occasional good weld and a lot of cocky crap the rest of the time
For me, I had to work out what I was or was not doing that caused such big differences

Study on Google what the weld is meant to look like and try and work out what is wrong

And don't pussy about with welder adjustments, big adjustments you will quickly see results

Paul

Your better to die trying than live on your knees begging
Last edit: 1 month 4 days ago by Mrsmackpaul.
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1 month 4 days ago #255200 by wee-allis

we allis,
I was a much better oxy welder than what I use now althogh the mig side is still improving thanks to that box trailer rebuild. 
With doing light metal I learnt when doing p-anel beating that a wet rag at hand is the answer to distortion. Plus numerous small tacks an inch aprt we were told to do but slightly closer worked better for me but all the time a quick wipe across the tack with that wet rag.
Now there are tiny T clamps that hold the metal level and with a small gap, do the tack and undo and twist the clamp and it comes out.

Cobba, I love oxy welding and the fact that it is just one step up from a blacksmith fusion welding is great. The son of a blacksmith mate of mine joined the Army to do a boilermaker's apprenticeship.  When told by the instructor that there are only two ways of welding, oxy or arc, he disputed the claim. He had to demonstrate the art of fusion welding using just heat and a hammer.
I do cool as I go and I used strong magnets to hold the super thin metal level.
 
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