I'm going to start practising some MIG 'spot' welding on some pre-drilled steel. It's about 1mm as the car panels I'll eventually be doing. Has anybody got a gas Clarke 151TE (as mine). I've been doing a reasonable job butt welding on Power 2 'MIN' & wire speed 6.5, with CO2/Argon mix. I'm advised power and speed should be cranked up for 'spot' welding. Any advice would be much appreciated. Also is it centre outward or from outside to centre with the torch?