bill, I have made a 20X24 pinhole camera. My protoype was made of, black foam core weather stripping, and gaffer's tape. It was fun to use but blew around quite badly. I fould an old plate holder for a graphic arts camera and the camera attached to it. It was super till it got soaked in a sudden spring storm.
I wanted a more durable and stable camera to replace the soggy box so i used pine and thin plywood. I totally over built the thing. Alone it was heavy but with the wooden holder it weighs a ton. With a friend i can move it about fine. It's fixed outer dimensions led to the inclusion of door handles. I went with a fixed box design because i did not want to buy or make a bellows. Boy if i would have only placed all the pieces on the scale first it would have allowed me a chance to re=design the camera before it was glued screwed and assembled. Please keep us informed of your discoveries as you build this challenging project camera. eric nelson marshfield wisconsin 54449
