Hey peoples!

I am having a minor debate with a co worker about modeling up a simple 90 degree bend. He has "all inside radii to be minimum bend radius" slapped on his drawing and he has then modeled the part with what I think is an impossible to manufacture inside bend radius of .029".

If the part is .250" thick, 5052 material, the inside bend radius at "minimum" can only be 20% of the material thickness? In other words the inside bend radius should be modeled at .200", Correct?

Thanks in advance.

Jack