How do I Fillet a Brep with edges that change parametrically?

Grasshopper
1

I am trying fillet this brep and I can’t find a solution to filter and select edges that keep on changing list order, dimension and properties.
The edges I want to get rid of are these vertical ones, it might help that their direction is {0,0,+/-1}:

Bad%20Curves
Bad Curves.PNG960×254 43.7 KB

The edges selection should be this:

fillet%20edges
fillet edges.PNG716×264 47.7 KB

I am trying to get a fillet like this around the whole Brep:

Correct%20fillet
Correct fillet.PNG958×318 68.3 KB

Here is the file: Fillet.gh (21.0 KB)
Help would be greatly appreciated

3

Thanks, I’d got half way with python but still had issues, that solves it.
Just got to find the issue with the radius now as I am losing one of my surfaces :sweat_smile:

4

I untrimmed your original surface than re-split with it against the surface edge. Looking more gnarly now hopefully!

FilletBrep_re_DZ.gh (30.1 KB)

5

Thanks, that works but unfortunately like the other solution the fillet fails for most values, 0.3 works but most others seem to fail. I’m trying to get it working with a python script as maybe it is a tolerance issue :confused: