The first shot shows the unnamed camera with home-made bellows fitted.
The next shows the 5 x 7 film holder in place. I had to reduce the width of the back opening by gluing in strips of wood, to get a snug fit. And chisel some wood off the left side of the opening so the film holder would slide far enough across to centralise.
The camera had its own wooden frame with ground glass. But the frame was too wide and had to be cut down at top and bottom. And an extra piece added at the left side. Also, it wasn't as thick as the 5 x7 film holder so I had to glue the two chamfered strips of wood on, to make my system of holding the frame in place, work.
The last shots show this system, which uses loose clamping strips. I knew this would work as I have used it on several home-made cameras.
To use the camera you put the ground glass screen in the back. The nuts lock it tight. After composing and focussing you remove the screen and replace it with the film holder.