When you need to hit a steel part, to move it a little, a steel hammer can leave marks on it. It’s best to use a punch made of brass or hard wood, between the hammer and the part.
I needed to adjust the position of a small part, so I made a brass punch. I started with rounds brass bar stock I had, and cut it to length with a hack saw. Then I tapered the end with a bench sander. Next, I sanded it with 150, 320, and 400 grit sandpaper. It still wasn’t polished, and I didn’t want to set up the polishing wheel on my bench grinder, so I found some more sandpaper. These were 800, 1500, and 2000 grit papers. The brass has a better luster than the picture shows.