I built a large format camera for my woodshop class when I was in highschool. It's based on a design by a man named Jon Grepstad.
Here's his site if you wanna build your own:
https://jongrepstad.com/building-a-large-format-camera/I don't have any pictures of mine (lol) but maybe I'll post em in a new diy thread when I decide to finally take em. I didn't know how to cut the brass locking mechanisms or find the hardware outlined in the design at the time so I just magnetized everything. That's an option if you don't have the means to work with metal.
Have fun and I really hope someone finds this useful and goes through with it.