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Correct bend radius for sheet aluminum?

C

chinch

Active Member
I've just purchased a 3-in-1 roller/press brake/shear, and in line with comments made in this forum some months ago, 90 degree bends are very sharp, and I suspect, not appropriate for sheet aluminum in an aircraft environment. I intend to get the fingers machined to a more appropriate radius, but can anyone please tell me what that would be?

Thanks in advance
Chris
 
chinch said:
I've just purchased a 3-in-1 roller/press brake/shear, and in line with comments made in this forum some months ago, 90 degree bends are very sharp, and I suspect, not appropriate for sheet aluminum in an aircraft environment. I intend to get the fingers machined to a more appropriate radius, but can anyone please tell me what that would be?

Thanks in advance
Chris
Click to expand...

I've got one of the same machines. Easiest way to get a 1/16" radius on the fingers is to weld a 1/8" rod to the ends of the fingers which is what I did. I also cleaned up the lower die with a die grinder and 2" scotchbrite wheel.
 
Thanks!

Thanks everyone for the excellent feedback and leads.

Did I say how great this forum is?

Chris
 
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