Working in Wood

For my warmup to building a 4x5 view camera project, I've started building a pinhole camera. Dad's got tons of scrap plywood out in the shop, so I designed a camera to work around my 4x5 film holder. Last weekend I researched how to make a box joint, and after a few practice runs yesterday, got a working jig. Today, I adjusted it a bit to make it cut accurate 1/4 inch cuts, cut out the frame of my camera. The picture shows the box before I glued it, with the film holder in it to test the fit. Sitting next to it is a piece of coke can with a .23mm hole in it. Once the glue dries, I will mount the front and figure out how I'm going to hold the film holder in place.