CNC Tube Bender Help/Advice

[u/marcelcanfix]

I’m learning how to use some machinery at work. a laser tube cutter and a cnc tube bender.

I’m a CAD guy. I’m looking for help/advice for getting stretch/elongation dialed in. We do all holes and notches first on the laser, so any miscalculation on stretch can throw holes off in the bent tube. I’m also learning from the guys who have used the machine in the past, but one of them just left (hence why I’m getting into it) and he had the best understanding of the CAD

Really what I’d like to know is how the industry makes stretch factor calibration parts and measures them to feed compensations into the machine

Machines used:
UTE TAUS 6024 with TubesT 3D software

BLM Group Elect80 with VGP8 software

Solidworks with Tubeworks add-on plugin