anyone make their own door panels???

If it's stupid but it works, is it still stupid?
lol "doorskin" plywood. Door skin for HOUSES!
It bends easily enough, it's easy to cut with a boxcutter, light and stiff for it's thickness. I've used it for making molds at work.
I can see using it in a pinch, but I’d definitely coat it/seal it with some type of weather-proof stuff.