you may find it will crack during operation due to the heat shrink/expansion Ah yeah, I was hoping cause it doesn't have any stress (weight - only a filter) on it, it might be ok so I didn't bother bevelling it out ( I def thought it about it), but what you say about heat is a good point. It it bre...

Been doing some more practice, stuff for a friend. Gave the old cast a go, not the cleanest on the sump, but doesn't leak so I guess it worked? haha Using 2% lanthanated 2.3mm for everything http://i64.tinypic.com/wryqh4.jpg http://oi63.tinypic.com/2vukbaf.jpg http://oi63.tinypic.com/30aaxwx.jpg htt...

Looks like similar issues to what I was having - http://forum.weldingtipsandtricks.com/v ... 2&start=10

So finally got a chance to have another go.. I bought a foot pedal and wow what a difference. I found that tungsten size seems to make a huge difference with alloy. Some 3/4mm alloy I was using a 2.3mm tungsten but intercooler piping I couldn't even get a puddle going properly so had to use the 1.6m...

my point to the OP was that you can weld without a pedal on aluminum just not continuously - with slope down set the main amps high enough to get a puddle fast - add filler quickly before it gets too big / out of control & start to wash forward while tapering off with the slope down - once the ...

Wow thanks for all the suggestions, this forum is really helpful. hows the welder? i see they are on special at the mo, looking at getting one myself. btw pedals are on special to. Yeah seems pretty good for a 'cheapy', I have an issue with the pulse not working but warranty will cover that when I c...

Change the balance up to 70%, 50% is actually creating too much penetration. Ohh right, ok that makes sense. I don't have a pedal at the moment was thinking I might get away without while I learn a bit. So that would be why its caving in too fast...too hot and too much penetration.. Ill try change ...

Hi guys, I am self taught, just like doing my own and friends projects in the garage. Have got reasonably ok at mild and stainless steel tig, so thought I'd try give alloy a go. Firstly, machine settings, Boc Smoothcraft 185 hf: 3/32 tungsten, White band (Zirconiated) 1/16 filler 5356 AC balance pre...