On a track, the extra boost given by premium can mean a few tenths of a second difference on a lap time. In the real world, it barely affects performance, or fuel economy. Consumer Reports advises that premium should only really be used in your car if your ownerâs manual mandates it.
1 Shielded metal arc welding (SMAW) - also known as stick welding or electric welding, uses an electrode that has flux, the protectant for the puddle, around it. 2  The electrode holder holds the electrode as it slowly melts away. 3  Slag protects the weld puddle from atmospheric contamination.
TIG Welding (GTAW) is a process that uses the a non-consumable tungsten electrode to produce a weld with or without a filler material. The equipment is significantly different than MIG equipment and somewhat different than what is used for stick welding. That said, a welding machine with the right accessories can be fitted for TIG welding.