Ive finally bought a welder (Clarke 160T) and gas bottle etc, and now have a few questions. I have been doing a welding course which has industrial welders which are either automatic and only require the thickness of steel to be specified or have a fully variable voltage and speed control. The Clarke being somewhat cheaper is a little cruder, and I'm not sure how to set it up. It has six voltage settings and a speed control. My initial thoughts were that I would choose some scrap that has the same thickeness as my project (2 mm), then starting in the middle of the settings adjust the voltage untill I have a decent arc which is getting plenty of heat into the steel, then fine tune the wire speed to get a nice clean consistent crackle. Once this is done move onto the project piece. Does this seem like a reasonable approach ? or should I be seeting wire speed than modifying voltage to suit ?