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FVFred Vraj26/08/2015
Hi Everybody,
I have been having some issues with getting the right flat patterns that have bends with other than 90 Deg.
I have my own database of BD for ALU and Steel Sheets.
I do manual testing on the floor with my press guy and my 90 Deg samples are quit spot on.
The BD is very accurate on my 90 Deg Bends.
I use this formula below to get NON 90 Deg bend deduction value.
BD for 90°/ 90 X Needed Angle
EX: ( in mm for ALUMINIUM 2.5mm TH, Bend Angle 36° )
4.09 / 90 X 36 deg
0.045 X 36
BD = 1.62 mm
I got this formula from this forum but I am not sure if it has worked for me.
It just seems to be too simple to be truth.
Thank you for any help that you can offer.
Fred