Alloy Tig welders

[GasMunkey]

I need a few bits blanking and welding on my fuel tank, any one here do this for beer tokens?

[BarryP]

It's quite dangerous welding fuel tanks, they have to be properly cleaned and then all fumes have to be purged out so the tank doesn't explode when it is welded.

[GasMunkey]

I've always been told to fill them up with water

[DrDeAtH]

You might have more luck on the mig welding forums. Some local guys on there set up for tig as well.

[BarryP]

GasMunkey said:

I've always been told to fill them up with water

Wash it out with soapy water several times and then before welding connect a pipe to the exhaust of a car and run it into the tank then leave the engine running for several minutes, the car exhaust fumes will purge out any remaining petrol vapours.

[vankypanky]

and hope it doesn't backfire while you are doing that