A stringer at work
This image appears in the gallery:
How do you make a piano? We go behind the scenes at Steinway to find out...

23. A stringer at work
How do the strings get into the piano? A stringer guides each wire through a hole in the tuning pins and then uses a machine to turn the pin three times, wrapping the wire around it. The stringer than puts the pin into one of the holes in the iron plate.