Designing a custom jig involves creating a purpose-built guide or fixture to improve safety, accuracy, or repeatability. 

This skill demonstrates the ability to adapt a jig or fixture while maintaining proper safety and functionality.

Process planning means thinking through steps ahead of time to minimize mistakes and wasted material.

Tool selection justification shows understanding why a specific tool was chosen over alternatives.

This skill involves correcting errors cleanly and intentionally, rather than hiding or ignoring them.