A saving must repay the cost of changing the designA saving must repay the cost of changing the designEntered recurring saving: $10 โ $8.50 โ $0.30 = $1.20 / boardOne-time change and verification: $600200 boardsโ$360Net scenario saving500 boards$0Net scenario saving800 boards$360Net scenario savingBreak-even: 500 boards. Engineering gates remain a separate decision.Engineering illustration ยท Illustrative inputs, not factory prices or production commitments