After spending a little time with the virtual action, it becomes easy to understand how important the relationship between the different action parts are to the performance of any piano. This is why a new innovation available to piano rebuilders is so exciting to us.
Material scientists expect, in the benign environment of a piano, a minimum life expectancy of 100 years. Indeed, it could last much longer.
A great deal of effort has been put into lightening the repetition. A testament to this fact is its unusual shape, designed entirely for the purpose of reducing mass or shifting mass towards the center of rotation. By reducing the moment of inertia, WNG has reduced the dynamic touch resistance felt by the pianist.
The design of these parts also allows a rebuilder to "customize" the dimensions of any repetition to fit unusual action designs. Pianos with these designs have previously been prohibitively expensive to duplicate amd have been passed over for restoration due to this expense. The huge benefit is that some of these wonderful pianos may now be rebuilt without the huge extra expense.
It is important to observe that this design could not have been executed in wood.