Damper work

[Jon Page]

I seriously doubt that a foam material to replace felt damper material
would not be successful. Moisture retention comes to mind first which
would lend to corrosive deposits encrusting the surface and making noise.
Also with the spring tension, the foam probably would continue to collapse.
Memory foam might produce deep impressions. Any fine regulation would
be impossible as the material would expand once removed from the strings.

At what point in the settling-in process would you time the damper lift?

Felt is the perfect material, soft yet firm.
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Regards,

Jon Page