How to round sharp edges of iregular mesh I have an irregular mesh created with Boolean modifier of a 3D scan and two icospheres. The mesh has two sharp edges which I would like to round out:



I can smooth out the top edge using Smooth Vertex to something I could accept but the bottom edge does not get smoothed out enough to be called rounding.

My clumsy attempt to show what my aim could be is this - the red arrow points to what is only a part of what I'd like to get (it should be similar but all around the sharp edge):



I have tried using Bevel, Multiresolution, Subdivision Surface modifiers but cannot get enough of beveling (when I get any).
I also used Bevel in Edit mode but it creates ugly artifacts because the mesh is irregular.

I cannot do this by sculpting because this is only a part of a workflow aimed to process many of similar shapes.

I've read about 15 other question with similar subject but none of them offered a solution I could use.

The question is this: Is there a way to bevel the sharp edges that is not manual?

Info: I have cleaned up the mesh with Triangulate, Remove Doubles and have removed zero faces with Edge Collapse. The mesh passes the "Check all" test in 3D Printing addon with all tests 0 (except the Overhang Face, of course).

The file with the above sample is here:
You need first to simplify the mesh using Decimate modifier, here are the steps:

1- Use Decimate Modifier, set Ratio to a low value I used 0.042 for this example.


2- Apply the Decimate modifier, then go to Edit Mode, select the edges you want to Bevel.

3- Ctrl + B to bevel the edges, don't use Clamp, but keep an eye on those adjacent edges, a little overlapping will be correct next step.
4- Ctrl + V and select Remove Doubles, fiddle with the amount until you weld very close together vertices, in this example, I used 0.5.

5- Now add a Subdivision Surface Modifier, if you haven't set the shading to smooth yet, it's time to do. This is the final result, of course you can choose the parameters you need for the previous steps, I put the values according to what I think you're looking for.
Hope this helped, Happy Blending!