Title: Demonstrate machine setup for SMAW operations, following all safety requirements, industry recommended practices, and instructor guidelines.
Course: Agricultural Fabrication and Emerging Technologies (18404) > Section: Performing Shielded Metal Arc Welding (SMAW) Operations

Demonstration should include selecting the appropriate polarity and amperage for the metal (i.e., type, thickness) and electrode (i.e., type, diameter).

Process/Skill Questions:

- How is machine setup affected by the type of metal you are welding? By the thickness of the metal? By the purpose of your weld (e.g., new construction vs. repair)?
- How do you determine which electrode is best suited for your weld?
- What national system is in place for determining electrode type?
- How does changing the amperage affect the weld?
- How does changing the polarity affect the weld?
- When should you change the amperage and polarity on the machine?
- What is the difference between DC+ and DC-?
- Where can you find the recommended settings for the polarity and amperage for various types of steel?
- How does the diameter of the electrode affect the appearance of the bead?