This video is an explanation of the math on the FAA Airframe test. You can learn to bend metal without doing this math - but this video is about doing the math. It explains how setback, bend allowance, bend radius, and sight lines work when bending a radiused corner on the brake. Using the analogy of turning a corner in an automobile, all of the appropriate formulas are developed and explained. This is delivered classroom style, with my bad attempt at green screening. Sorry about the poor appearance. This fits in with my sheet metal series project 2.

For those interested in more details, I have a follow up video explaining how to apply these formulas to non-90 degree bends. I also have several examples showing the math.

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