I have created a simple knotted sphere in Rhino. Snappy generates a perfect mesh now... I used the same snappyHexMeshDict as in previous meshing of my guppy.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiq6LTt1LkKfl4CnyQs1iWRfsAjTww7wmOrH8RIX5n3VdfJFtPkfYwdTHQHDmEJ5e_V9vJG4ex62kt0XCxEpmATwuL4JbIuBzzEl1UKWToR0cVK8X9gvoqOZj_el7G3rH4pOlRNQ1ewFcs/s320/Screen+shot+2012-05-18+at+10.29.14.png) |
edge refinement at the cut |
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhG5r1qxMhZ_63zcDiwRE3XUH-0tZVGnmpGUSY1L5EiWG4uReVIqdOGqEWWeDHOeDHgfN8pWOEsTcRPEEkTQvv_XPNfOquZUwnxCUmLz0uZoewRz869Q-LYaBbF4z1TSwcABUBNFDVTzPQ/s400/Screen+shot+2012-05-18+at+10.28.57.png) |
The red line is the edge for the Explicit feature edge refinement |
Later I have done layer addition: 10 layers absolute thickness, expansion ratio 1.2. The result is not perfect to my lay eye.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiunCzb7K19hkigJh5TyYedSeGB4eEYz59Kt03g5a1-MBe8LkRK1mfwtPNFvRp6dnWtAOcFFgr9ODmrZTEPgixmwrUp6blxWk_854YdemHmObhvZKSw6MLU4uniHbgV9p0dzeJZSxNOwX4/s320/Screen+shot+2012-05-18+at+21.54.45.png) |
The layer addition is not perfect |
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