Why The Second Bend Is Always The One That's Out (It Isn't The Backgauge)

On a part with more than one bend, the second bend is the one that comes out wrong far more often than the first. It is usually not the operator, and it is not the backgauge drifting. The first bend is gauged off a clean cut edge. Every bend after that is gauged off something you already bent. CHAPTERS 00:00 The bend that's always out 00:29 What the backgauge measures 00:55 The second bend 01:22 Errors that add up 01:51 The flat pattern 02:21 Inside or outside 02:48 Angles that wander 03:16 The tapered flange 03:44 Holes that stretch 04:10 The flange that slips 04:39 Check the decisions Covered in this episode: • What the backgauge actually measures • The second bend: gauging off a bent flange • Tolerance stack-up across a chain of bends • The flat pattern: air bent radius vs the CAD radius • Inside vs outside dimensions • Bend angles that wander from batch to batch • Tapered flanges: micro joints, burrs and square edges • Holes that stretch next to the bend • Short flanges that slip into the die • Check the decisions, not the machine FREE CALCULATORS Bend deduction / K-factor calculator https://www.sheetmetalcalculator.com/... Press brake tonnage calculator https://www.sheetmetalcalculator.com/... All tools: https://www.sheetmetalcalculator.com 🔔 If you work with sheet metal, plate or fabrication, subscribe — new episode every week. #pressbrake #sheetmetal #bending #metalfabrication #fabrication #engineering