Nothing against Bendtech. I understand that not everyone can do the math.
It's just that I've always done it this way and I tend to resist change.
You should have seen me fight moving from the board to Autocad.
For awhile I had to doublecheck the computer with trig. It had to earn my trust.
If you're savvy enough to calibrate the formula with a test bend, then I'm not sure why you would need the BT. That in itself says you understand the math.
Maybe someday I'll see the light.