How To Weld Replacement Sheets With A Tig

[Mohsen]

hey guys

looking at buying an older car with some rust

and unsure how to go about fitting the new panel

some resto threads showed me that they tacked them on and then put some putty and stuff ontop to smooth it out

is this the right method?

what setting tig should i use?

im pretty scared with the tig as i have blown some holes into stainless sheets

[Dan_J]

the plan shud be, line up clamp,magnet into place, tack, then weld the joins completely sealed, grind/file and sand it smooth .

shudn't really be using putty unless the heat distorted the panel etc

[Mohsen]

the plan shud be, line up clamp,magnet into place, tack, then weld the joins completely sealed, grind/file and sand it smooth .

shudn't really be using putty unless the heat distorted the panel etc

thought so, would tigging be ideal? wat about arc welding?

[BOZ22N]

Sam do not use the tig, way to much heat. Just use a mig and tack it in diagonals, make sure all your replacement panels are a good fit then slow and steady is the key mate.

[Dan_J]

and arc is just shithouse for that, mig wud be the go

[midnight]

with MIG I always wipe down the panel with a wet rag between welds. helps keep the heat down and minimise distortion.

[runnin4life]

when welding in panels should you tack it ever say inch, then go back to the beginning and put another tack, over lapping or just under the first lot of tacks and keep repeating till you have welded the hole seam/join.

or is it better to tack it then do one complete weld between each tack one at a time?

cheers

elliot

[Craved]

when welding in panels should you tack it ever say inch, then go back to the beginning and put another tack, over lapping or just under the first lot of tacks and keep repeating till you have welded the hole seam/join.

or is it better to tack it then do one complete weld between each tack one at a time?

cheers

elliot

unless you can hammer weld or are good with a shrinking disk you should use the tack method for the panels.

Bear in mind that quickly cooling the area after the weld will cause it to shrink, you just need to be sure that the shrinking effect isnt greater than the expansion caused by the welding.

[mr m00se]

Further more with regard to the mig, ive got not idea your experience level, but my pick for consumables for a car would be

.8mm er70s-6 wire , co2 sheilding gas and dialing in 40-80 amp. You can go for an argon mix gas to reduce the spatter but its twice the price, per volume.

[z-edition 006]

use the mig

[aerofocker]

so you reckon a tig aint any good to weld car pannels? i would have thought it useful no?

[Cartman]

so you reckon a tig aint any good to weld car pannels? i would have thought it useful no?

Takes to long to generate enough heat to get penetration, than you need to spot it with filler rod... and basically it created to much heat.

your much better off tacking it with a mig, basically tac the whole way around it in a sequence to keep the heat even so the panel doesnt warp.

[aerofocker]

yea i get you now,the mig is kind of instant,i just bought a miller 275 syncrowave,mainly for alloy ect but i had hoped it would do a bit of boddy work also!looks like ill have to buy more toys,good excuse for the gf!

[25slides13]

MIG is definatly the easyest way. tacking all the way round till the whole thing is sealed is the best way. depends on what sorta quality repair you want thought.

most rust repairs or panel joining i do myself, i weld with any oxy welder. purley because you cannot metal finish panels when using mig because is makes the panel to brittle and un- workable. and yes oxy does put out alot of heat but when done propery it is the best method. mig is i lot quicker thou

[DVS JEZ]

pop rivet the panel in place and then bog cheap and nasty

[GTRsean]

Or, what a mate found in his 32GTR rear quarter panel wheel arches, they had used aluminum tape and bog to cover rust holes.

[Lillymichelle]

Hi friend

This is Lilly. I don't have that much knowledge about fabrication. But what you gave that is useful for me.

Thank you.

________________________________________________________________________________

_____

Want to get-on Google's first page and loads of traffic to your website? Hire a SEO Specialist from Ocean Groups seo pecialist

[bLaQ.bOi]

was going to tell you to use mig like everyone else did!

well howd you go? any pics?

i have no idea about welding car panels. but when we make pharmaceutical tanks, when we weld the seam after weve rolled the tank. we hammer and dolly it just to stress relieve it

[Rowdy]

http://users.chariot.net.au/~stmezz/rust.htm

this bloke has done a pretty good job, using the tig as well

should probably link you to the finished product as well lol

http://users.chariot.net.au/~stmezz/simons.htm