Rate my weld please, first time tig
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dialing in the power

first test bead

then into the deep end


i know its not particularly clean or the best stuff to learn on but the first thing im going to weld is exactly this material so i figured its best to learn on it

got a couple questions
the black speckles on top is that shit from the dirty ally or not enough gas
can anyone tell if its enough power or maybe a little too much

my regulator is for both co2 and argon but only give a psi out reading, would i be better off getting some sort of cfm meter too

other than that im reasonably impressed with it, any input welcome
cheers

Edited by Brett on 21st May, 2014.

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Not clean enough, no where near. Abrasives embed into alloy giving the black shit when you weld. Use scotchbrite pads to clean back before you weld.

cool cheers,

tapped the gap closed and went down the side, a little bit of bridging in there, and i dont think it turned out too bad


i will scrub up the next bit best i can :)

Yes i moved to the darkside

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Scotchbrite Rolocs on a 90deg die grinder are what you want.

practicing with what i have at hand to clean up i find a fine cutting disc rather than a grinding disc to take back the cast and general crap, then a stainless wire brush and it welded without most of the black speckles

so cracking on...





dont think this turned out too bad,
there is a couple untidy bits, one where i managed to poke the tungsten with the filler rod whilst re positioning it, other than that i have not had to adjust or regrind the tip so im happy :)

packing the tig up now before i find something else to weld

Yes i moved to the darkside

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Very nice Brett.

What the mind can conceive the mini can achieve
MITP 2012 17.01 seconds 1/4 mile against "The Don"
MITP 2013 16.83 seconds 1/4 mile

I really need to learn how to tig weld. the guy we share the shed with has one all set up and all I need to do is spend some time with it but that is the one thing I don't have

Welds don't look too bad for a first attempt, especially as cast is generally dirty to weld than clean ally.

It's a bit late now, but welding such thick sections of ally, you are best off chamfering the edges to half the wall thickness. that way you can get deep penetration in the weld, and if you wish to clean up the welds flush with the surface, you'll have plenty of metal to work with beneath the surface.

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1/4mile in 13.2sec @ 111 terminal on 15psi

somthing I found, was use a stainles wirebrush to clean before welding, and ONLY use it for ally welding.

for cast stuff i always end up with the cleaning set tu full ( if you have that adjustment.

also preflow and post flow, especially post flow, keep the argon going for a bit to stop the oxidization

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On 21st May, 2014 madmk1 said:

On 21st May, 2014 matty said:
that way you can get deep penetration

Sorry mate I can't really tig weld very well, but I find this is best for lots of different applications in life lol,

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VEMS + 12 PSI + Liquid Intercooler = Small Bore FUN!

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I've got a small job to be done on really thing aluminium, and didn't want to fuck up the part at the first strike, I went with what I already know. I was well impressed with the results of the test piece

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oooh lots of knbs on that!

AC Balance changes the amount of weld cleaning, 20% will be hotter, but 50% will have more cleaning ( current flowing backwards and pushing shit off the weld)

colin thats just showing off , ill get there

Joe, i did play with that one but it seemed to upset what i already had, seemed to make it overly powerfull but with no temperature at the same time
ill get some new sheet ally before having another go
whats it like tig'ing s/m steel ? much the same

Yes i moved to the darkside

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anyone who can tig weld is a god in my eyes. It's a dark art I cant master so kudos to u

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Watch some of this guys vids he knows his stuff
also had a bunch on settings and what they do

https://www.youtube.com/user/weldingtipsand...ature=hovercard

haha good call Dave.

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1/4mile in 13.2sec @ 111 terminal on 15psi