It looks as though he modelled the printed machine on a Stuart beam engine model? I found these videos on YT and it appears that the most noticeable noise is actually just a rythmic knocking. Don't know if you can copy a sound clip and just repeat it?
It also looks as though in practice they seem to run faster than we've been thinking, but that may not necessarily be the case if it was scaled up to real life?
https://www.youtube.com/watch?v=PIn1tG2WSeo
https://www.youtube.com/watch?v=pSXgm8AlniQ
https://www.youtube.com/watch?v=8IF7M1B7RN8
https://www.youtube.com/watch?v=6H-JYSp99eU
https://www.youtube.com/watch?v=JTZikEUzwLo
https://www.youtube.com/watch?v=FnHICHT2wZE