Pianos in bad condition in Singapore

piano hammer felt drop

doraleo wrote: My piano's hammer felts got problem and been glued two years ago. Now some hammer heads can not been released from the strings when a note is played with a hard touch, why?

The action is very complicated. There are parts I won’t get technical) that are involved in launching the hammer towards the string that should fall away and just catch the hammer on its way back so you can repeat notes quickly. If the action is old and worn, or dirty, those parts might stick when struck hard because they don't move the way they should. They would then wedge the mechanism and prevent the hammer returning.

Probably because it’s so badly notched that it got trapped between the strings, in which case the felt needs replacing. A tuner can temporarily cure the problem using toning needles.
The needles are stuck into the felt to break it up a little. Compacted felt in the notches can be eased, but it won’t last long. It’s not the primary use of toning needles - they’re for even out the sound between the hammers - but it does help when a hammer gets sticky in a very old and hard-played instrument.

Edited by StevenKoh - 08 Dec 2018 at 5:18pm

This piano is an old model. Some painting was chipped off. And all the strings were rusty.