I would like to know how the fillet edge (of a solid) component works

[Joseph_Oster]

@applemslemon

If I don’t want to fillet all the convex edge, how can I pick some of them?

Pick the edges you want and manually create a list in a text panel (with ‘Multiline Data’ enabled):

fillet_edges_2020Sep15a.gh (19.6 KB)

All edges may not work but it’s often quite effective. You can specify a separate radius for each edge.