T.O. 1-1A-9TABLE A-17. METAL BENDING AND BEND RADII BEND ALLOWANCES SHEET METAL BENDALLOWANCES PER DEGREE OF BEND ALUMINUM ALLOYSExample: To determine bend allowanceGiven: Stock = 0.064 aluminum alloy. Bend Radius = 1/8, Bend Angle - 50°Find bend allowance for 1° in column for 0.064 Aluminum opposite 1/8 in column "Bend Radius".Multiply this bend allowance (0.00268 in this case) by the number of degrees of the desired bend angle:0.00268 x 50 = 0.1340 = total bend allowance to be added to the length of the straightsides of the part to determine the total length of the material needed.A-18