design uses 6 m2 screws. 6-9mm length would work.

I made this hardshell notebook cover for my field notes book. I printed it out of PETG-CF but you could probably print it out of anything its a pretty easy model to print. Used some glue on buildplate I think it helped with the small lines. I spray painted the top panel red but printing it out of a colored filament would be a more robust design choice.

Design is inspired by the windows on the cathedral in Florence Italy.