Chamfer not working?

[happyday.mjohnson]

I am trying to strengthen a lip on a an enclosure:

to look like this:

i've tried several different things, but i'm not getting the chamfer right.  I think it has to do with how i fillet'd?  Is there an easy way to do this?

Here is a link to my project  in case it is helpful.

Thank you.

[PhilProcarioJr · Accepted solution]

@happyday.mjohnson

It's because you have a zero thickness edge between the top and bottom part. I would draw the chamfer on a sketch and use the sweep tool using the edge as a guide.

http://autode.sk/26r46mR

[happyday.mjohnson]

Wow!  This worked exceptionally well.  I am grateful for your thorough answer which included the example.  I appreciate the time you took to share your knowledge.  Thank you very much.