The NY piano on the left is 15 years old with the original strings. It has the original hammers but when I arrived here three years ago, the piano had not been regulated in years. .....................
Thank you for the detailed description and witnessing.
"Moisture is the enemy of felt" told me Jack Brand (Wurzen)
When the hammers have soften with a humid climate I never was able to bring density back in the heart of the hammer.
Ironing can put some out but is also dangerous for the fiber so it is not a simple operation.
Probably only the best felts can receive moisture, then shrink and go back to previous condition.
I see what you mean with fine filing (burnishing) the crown before a new event, the thin filing always add something, it is not only for shape or to close the needling holes) +
Possibly why using glass files make a different job.
I wonder if some grains of the filing paper are not inserted in the felt, that would add brillancy certainly.
Congratulations for you 180 tuning/prep Sally.
Thanks again for the posts - you write not often but it is always interesting -
And that is the first time I can hear a pianist talking of tone with side by side NY and Hamburg Steinways.
Did you see that movie where a grand Steinway is build for Helene Grimaud ?
AT some point a French pianist Pierre Laurent Aymard, comes at NY and need to choose a Steinway from the basement. He is in trouble visibly, and do not find what he wants (he is somewhat exigent , also ).