David Jenkins
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| posted on 6/7/04 at 02:47 PM |
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It would be better to practice until you can weld 1.6mm properly - there's no need to go to the extra thickness. 19mm sq and 25mm sq by 1.6mm
thick are very common sizes and easy to find (and probably the cheapest).
Do you know any good welders? I found the biggest help when I was learning was to have some direct guidance for an hour or so - watching an expert
really demonstrates the normal state of everything - the traverse speed, angles, the sound, everything. Also some basic guidance in setting up the
machine helps a huge amount (it's the hardest part of MIG welding, as far as I'm concerned).
Made a huge difference for me!
David
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BradW
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| posted on 6/7/04 at 03:04 PM |
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Mig Tig
Here in SA my local supplier has both 1.6 and 2, the cost difference is very little.
I agree totally, the same guy who owns the steel place is building a replica Seven and also a great welder, he has helped me lots, 5 minutes with an
expert is better then 5 hours with a book.
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alainmengoli@hotmail.com
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| posted on 6/7/04 at 03:34 PM |
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About concave convex I was told tig is better as ythe stress passes through the weld as it ia concave or the other one. And with mig it has two focus
point on either side of the weld hence you might hear people mention weld failure but it tends to be stress at those points on the endge of the plus
the metal characteristics change at those points as they are a mixture of good weld and badly melted metal. hence another reason why when tiggin
aluminium the weld never cracks but the original weld near the weld does, not due to stress but because the metal was not treated after being welded.
Well what do I know I'm a publican.
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white130d
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| posted on 6/7/04 at 03:55 PM |
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Ohhh, the sound
Welding by sound is important, you can just tell a good weld by the way the crackle is smooth and consistant, no splat crackle buzz buzz sputter
sputter sputter.
David
"There's only 2 things that money can't buy, and that's true love and home grown tomatos" Guy Clark
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cassidym
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| posted on 6/7/04 at 06:56 PM |
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Thanx, guys - I think I'll use the MIG for tack welds and do the main welding using the TIG.
I plan to go slowly in any case - each and every weld should be perfect as safety is my main concern.
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