"key bounce"

[Joseph Garrett]

 << What causes a key to "bounce"? In that, when the key is pressed and
> then it returns there is a little bounce up and down. What can be
> done to minimise this? 

Too much lead is definately a cause. However, a properly regulated key up-stop rail will minimize the problem. A "smidgeon" of play for the sharps, is usually adequate for the whites.
Joe Garrett, R.P.T. (Oregon)
Captain, Tool Police
Squares R I
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