How To Scratch Start Tig Weld Sheet Metal

Tig welding for sheet metal.

How to scratch start tig weld sheet metal.

Scratch start the oldest method is scratch start. No pedal to control the amps. How to weld tig welding. But using this method also requires some practice and practice advice in order to understand it.

Https goo gl frdnss this video was by special request from a viewer arcstreams. Forget the larger 1 8 inch tungsten electrode and use a smaller one. However this technique may cause the tungsten to enter the weld and carries the risk of contamination of the weld. Tig welding 1 8 thick angle using the scratch start method.

The best two electrodes for welding auto body sheet metal is either ceriated tungsten or thoriated tungsten. Just set it and go. Your tig is likely to have the right electrode in it already. Notice at the end i have to quickly pull it away to break the arc and quickly put the.

An air cooled tig torch regulator flowmeter and argon cyl. Using a tig welders means that one can work on materials of 26 gauge. Turn on the. It works by literally scratching the surface of the workpiece to form a short circuit to start an arc.

Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. Ditch a 1 8 inch tungsten electrode for something much smaller like 1 16 inch tungsten. Using this process enables more than effective work on thin materials as it provides high precision and high quality work. Tig welding sheet metal.

To weld sheet metal with solid wires use electrode positive ep or reverse polarity. For aluminum the best choice is a pure tungsten rod. Subscribe for new videos every monday and friday.