ADVANCED SETTINGS

Pulse

The set’s pulse function alternates between a high ‘welding’ current and a lower ‘background’ or ‘base’ current. The time the high current is on in relation to the low current can be set, plus the frequency of the pulse from around 0.5Hz to 250Hz. The high pulse creates the puddle while the low one lets it freeze slightly, which maintains penetration without the risk of blow-through. Have a play. Start with 33% welding current, 33% base, 33% time (pulse width) and either 1-2Hz or 60-120Hz.

2T and 4T

On the 2T setting, the torch will become live when its switch is pressed and remain live until it’s released. On the 4T setting, one touch of the switch will start and a second press will stop – so you don’t have to hold it down. It’s ideal for walking the cup.

Spot welding

TIG can ably replicate resistance spot welds. Clamp the pieces firmly, set the current higher than normal and make a spot until you see penetration on the back. The first [A] is OK, [B] was too cold, [C] was too hot and [D] had too much torch distance.

Dent repair

The TIG torch can be used simply as a source of heat. If a panel is dented, the metal has been stretched. You can rectify the dent by shrinking it. Gently heat the area with the torch without melting the surface, then dress with a hammer and dolly.

Metal shaping

The torch can also be used as a localised heat source for bending thick material. Carefully heat the area you’re bending without melting the surface. Keep the amps relatively low, take your time and keep the torch moving to heat evenly until red hot.