So I want to make an oval that's going to be about 24" x 54" which is larger than I can make without splitting the cut up into two halves. It's going to be a cheval mirror frame. Here's a rough sketch that shows were the finger joints are. It would be nice to use the two red joints as the break for the two pieces but I'm not sure how to get it accurate enough. The other option is to add a finger joint at the center (blue line) where the mirror will pivot. The 3rd option that I haven't sketched out yet to see if I can do it would be on the yellow lines. I know finger joints are strong but I would rather not add extra joints if needed. How would "you" do it? I'm using Fusion 360.

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