Knife hinges. These things are hard to find. When I did find them, I found out they were over $20 a pair!! So I decided to try and make them. Normally they would be made entirely of brass, but I used what I could find (and afford) which was a flat piece of hot rolled steel 5/8” by 1/8” by 36” in dimension. I started by marking out the piece for each half of the hinges and the holes. I drilled all of my holes, then countersunk the screw holes so the screws could sit flush. I then cut the sections tediously with a hacksaw and set the pieces aside. I bought a short brass rod and cut it up for the pins. I used a ball peen hammer to rivet the two hinge halves together with the brass pins. Then, a lot of grinding, filing, and polishing later I have a nice looking knife hinge to use on future projects.