How to Pick a Welder

1. Pick Your Process
Select the process that matches the metal you want to weld or cut.

2. Understand Process Advantages
Unfortunately, there is no single welding or cutting process suitable for all applications. For this reason, it is necessary to consider the advantages of one process over another.

	Stick (SMAW) Better suited for windy, outdoor conditions More forgiving when welding on dirty or rusty metal		TIG (GTAW) Provides highest quality and most precise welds Highest aesthetic weld beads Allows adjustment of heat input while welding by use of a remote control
	MIG (GMAW) Easiest process to learn Highest welding speeds possible Provides better control on thinner metals Cleaner welds possible with no slag to clean		Plasma Arc Cutting and Gouging (PAC) Use of any electrically conductive metals Small and precise cut Small heat-affected zone which helps prevent warping or paint damage

3. Understand Duty Cycle
The DUTY CYCLE of a welding power source expresses, as a percentage, the actual operation time that it may be used at its rated load without exceeding the temperature limits of the insulation of the component parts. The rated load is the rated amperage at the rated load voltage. This is calculated by multiplying the rated amperage times the rated load voltage, the product is measured in watts. In the United States, duty cycles are based on a ten minute period of time. In some other areas, notably Europe, the duty cycles are based on a five minute period of time. This may be shown as a 100% duty cycle at a reduced rated load. Factors which contribute to lower performance include high ambient temperatures, insufficient cooling, air quantity, and low line voltage.