Autodesk Inventor

[#1]

I am having a problem with the contour roll feature. I am adding 3/8" ti a length of straight duct to make an egde. it works ok except that when I split the thing to length ( joins into a y connector). It will no longer unfold. also looking for the setting to get the flat patterns to match true length (see the unsuppress to unfold, while suppressing the first two features for the true length). On the contour roll suppressing the split will allow it to unfold. unfortunately that is useless to us.

Thanks,

Thaddieus Fransman