Olli Lammi wrote:

> On 26.11.2012 05:51, Jan Andersson wrote:
>>>>>ChrisKlinger wrote:
>>>>>
>>>>> What is best for replacing body panles?
>>
>> Since you have to ask.... I'd say MIG
>>
>> I would say definitely MIG, it's cheaper and easier to
learn, I think.
>> Then again I haven't owned a TIG yet, I see it as the tool
of choice for
>> aluminum work, where MIG would fall flat on it's face even
with a spool
>> gun, in comparison.
>
> This said, having never welded any body panels using any
method. My
> welding experience is mostly welding 0.5 mm thick square
pipes together
> to form different kinds of household objects (to mount car
tyres to
> wall, store fire wood etc.). I have welded using both MIG
and TIG.
> Some of this might also sound obvious, but decided to write
it anyway.
>
> I would go MIG for that kind of work. A lot easier to tag
pieces to
> their assumed places first. A lot easier to weld in hard to
access
> places where you necessarily cannot see everything. Lot
easier to weld
> in short lenghts here and there to let things cool down and
minimize
> bending the objects.
>
> You can make nicer weld with TIG and for example for pipe
welding TIG
> should be the tool. MIG weld usually needs more grinding and
polishing,
> if the object needs to look nice.
>
> MIG is not handy, if you have different materials to weld.
With TIG you
> basically just change the filler material stick and you can
weld
> different stuff (aluminium, steel, stainless steel, ...).
With MIG you
> have to pull out the old wire, feed ahother reel and if I
recall right,
> the gas is also different for example for steel and
stainless steel.
> With TIG you can also weld without filler, just melt the two
objects
> together.
>
> Someone with more skill with TIG might say, all can be done
using it,
> but in my experience, I would start with MIG.
>
> MIG or TIG, I think most important is to practise, have a
test piece of
> similar material and thickness. Test and adjust the current
and wire
> feed (MIG) before starting the actual work.
>
> My thoughts of it.
>
> ---
> Olli

Thank you all. I had many doubts after reading in different
locations, but your tips have pointed me firmly to mig.

I used to do great with oxy-acetylene and a henrob low-
pressure torch, but, even with care, some warping was
unavoidable.

Chris