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Sheet metal stretch out

Question asked by Carl Dahm on Nov 5, 2014
Latest reply on Nov 5, 2014 by Deepak Gupta

Can some one please explain this to me. I have a sheet metal part that is formed with a 2" leg and 1-1/2" leg. The material is 1/4" thick and has an inner bend radius of 1/4" with a K factor set to 0. How can my flat pattern measure 3.39" long. (2" leg + 1-1/2" leg + ((3.14 * .5)/2) = 4.285" NOT 3.39". This is critical as I use the 'flat pettern feature to create water-jet / laser drawings. On the attached .pdf see part labelled as sandwich angle plate

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