How to fillet the following object manually?

Rhino Rhino for Windows
1

Hi,
I’m going to fillet the following object by 0.12 using auto fillet but it fails as you see. What is the step by step procedure to do it manually?
1.3dm (146.1 KB)

2

Hi Alex - first fillet all the vertical and top edges together at .12, but not the bottom edges that are in the plane. Then FilletSrf the fillets to the plane at 1.2, with Extend=No. Then, trim these in and clean up.

Fillet_AW.3dm (199.1 KB)

-Pascal

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