[TheForge] engineering question

[Kenny O.]

Dan Tull wrote:

>In slitting and drifting a square hole,
>since no metal is lost,
>will it make a difference in strength if the hole is square to the side
>or on the diamond?
>
>
>dan tull
>georgia
>abba, afc, S.C. psba, obg,sofa
>  
>
Where the two planes intersect  is where the stress fractures occur. The 
more acute the angle the more the propensity for stress concentration. 
That is why port-holes are not square any more, and  all ship openings 
are radiated (with radius).This may or may not pertain to your function, 
but that's all I know.
 
K.O.