I am trying to build bend tables for the sheet metal (typ. .059" Stainless Measured) we bend. Our tables are accurate for angles 90 degrees and more but fail at acute angles. I have pressed 5" test pieces at 135 (so a 45 deg acute bend), 145, 100, and 90. We may have had bottoming trying to press the 145 but the 135 completely airbent. I have been using the bend works PDF http://www.micro-machine-shop.com/Sheet%20Metal%20Bending.pdf to assist me but while it works wonders with 90 deg bends I'm having a real hard time with figuring out acute angles. I set up a sketch jig if you will to help me interpret the dimensions. Has anyone had any luck with this or know any good calcs that work on non 90 degree bends?