How do I improve this loft?

[Anonymous]

The screencast shows the loft I am attempting: 2 profiles (same shape, the second one is smaller), and a center line. The inner bend of the resulting shape has a strange wrinkle that I would like to be smooth. Does anyone have any suggestions for how to achieve this? 

[jeff_strater · Accepted solution]

Hi @Anonymous,

Centerline rails really control just the path that the loft shape takes.  What is happening here is that the profile is big enough that, on the inside of the curve, it gets "pinched" because the radius is too small.

[edit]:  forgot the picture:

To improve this, I would just change the radius of that curve to be larger.  Or, you can experiment with non-centerline-rails, but my guess is that this will be harder to get right than just making that radius bigger and using a centerline rail.

Jeff