Close-ups of Alternate Model 2 are here. Close-ups of Alternate Model 3 are COMING. And my original model, the one I follow in my own construction is here.
This post is about Alternate Model 1.
This is the only model I'll be showing you that has no exterior signs of dowels or nails at the joins in the frame. It is made with butt joints, and I think that means the butt joint is secured with two interior dowel rods. This is classic butt joint structure, which Wikepedia gives a simple explanation of here, with a simple line drawing, like so:
In any case, since we can't see the interior of this joint, suffice it to say that the frame of this screen is not nailed together from the outside.
This one is also a bit curious, because I can't figure out for certain which is the outside and which is the inside of this screen. So, here is one side of the screen. This side has the classic screen molding, holding in the screening. I think this is the front, or outside of this screen.