LeftieBiker wrote:Good job. All it needs is a couple of pieces of rubber weather seal in the notches, and you will have a great dry box.
It really doesn't need weather seal, not the way I've cut it (at least that's my opinion). I drilled holes first that are no bigger than the electrical cords and then cut the notches. By drilling carefully, the lip on the lid covers the notch when closed and kisses the top of the electrical cord. The only way water can really get in is a) if it's driving sideways or b) if the box should happen to end up sitting in over 3.5" of standing water.
Edit: Thinking about it, if you did want to use some weather seal, to make doubly sure that water doesn't have much of a chance to get in, I think it might make sense to make the holes/notches for the cords a hair larger and attach the seal around the electrical cord at the strategically appropriate point, rather than trying to attach it to the box. I'll see how it goes...should be raining tomorrow when I need to use the box for the first time.