How can I do whole mesh smooth with fair filter?

[fgbxx]

Hi, dear all,
I want to smooth a mesh and keep the volume as possible , but If I input a closed whole mesh to the PMP's fair funciton, it return "Missing boundary constraints". So how can I do whole mesh smooth use the fair funciton? Anyone can help?

[dsieger]

The implicit_smoothing() function with re-scaling enabled (the default) is probably your best shot, see the API docs

[fgbxx]

@dsieger thank you for advice.
But I tried the method on the vessel surface smooth. For the re scale enabled, the vessel shift from the original one. If I close the re-scaling, also , the tiny vessel will be shrinked.