Here you can download a free metalworking project for making a sliding barrel bolt latch from scrap.
Sliding Barrel Bolt Latch is a type of door hardware that use a sliding action (lift the knob, slide it over and drop it into the notch) to engage a catch. These kind of latches are for use on doors, access panels or furniture doors where they would be opened from only one direction.
The complete sliding barrel bolt latch can be made of metal scrap from your workshop. Its design is very simple and easily adjustable regarding the size. It can be surface mounted horizontally or vertically. With a little effort, eventually there will be no difference when you compare it to any sliding barrel bolt latch bought at the store.