Hi Brian
Your suggestion regarding using gas, hammer/dolly-welding, then heat
followed by shrinkage to chase out the waves is correct BUT it is not
for the individual just starting out. There is no question about the quality
of the finished product - in most cases if it is very well done one can
never tell where the seam is or was. Most of my friends here on the prairies
doing panel work are down to using Tig because of minimal warping due
to heat. The other aspect is that the hammer welding technique you use
is now not being taught in the most prairie technical institutes - which is
unfortunate.
Kind regards
Ed
Saskatoon
Brian Burke wrote:
> I have a mig, tig and gas in my shop. You cannot answer the question
> which is better as it depends on what you want. About 95% of all my work is
> done with the gas torch as most of all my work is on the body panels. If
> you are doing panel work and are doing a but weld, in my opinion the gas is
> far supperior, followed by tig, then mig. If you are doing a cheaper
> overlap weld the mig is fine, but if you try to do much hammer work the mig
> weld will crack or weaken.
> When it comes to spot welds, or welds that require filler the mig would be
> your best bet as it is easy and better suited to that kind of work. It all
> depends on what you want.
> Do not complain about the price of the small migs or tigs as my last tig
> was $10,000 cdn and the mig was $12,500 cdn, but that is what I do. If I
> could only have one welder, it would probably be my Henrob, but do not think
> that any one machine will do everything.
> Just my .02 cents worth
>
> Brian
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