Technical snapshots
One or two bits of wool wil save your knuckles and
and help ensure accuracy, moreover they will keep their shape longer.
Through this operation the original shape of the knuckle is restored.
Any old glue deposits on the shanks should be removed before positioning the new hammers.
The smaller the contact surface hitting the string, the fewer the harmonics dampened.
A sandpaper file is used to rubbed away the outside crust of the felt leaving your classic hammer crown untouched.
Lubricating the jacks in the upright action.
Lubricating the jack shoulder.
Gluing the new bridle straps in the upright action.
Schwander type wippen(Wurlitzer 1930)
In a grand action the wippen is the nervous center.