Had the same problem. Since I live in a place where Casio doesn't have a service center, I decided to design and print my own replacements on my 3D printer. I was able to print a batch of 10 in about an hour and they worked great. I plan to replace all the original ones with mine to prevent future trouble. You will need to use a flexible filament to print. I used a Ninjaflex clone and that worked great. I plan to replace all the rubber ones with my printed version so it shouldn't degrade over time.
Here's the link for the design if anyone is interested.
Replacing the hammer on the Px-100
in General Privia Discussion
Posted
Had the same problem. Since I live in a place where Casio doesn't have a service center, I decided to design and print my own replacements on my 3D printer. I was able to print a batch of 10 in about an hour and they worked great. I plan to replace all the original ones with mine to prevent future trouble. You will need to use a flexible filament to print. I used a Ninjaflex clone and that worked great. I plan to replace all the rubber ones with my printed version so it shouldn't degrade over time.
Here's the link for the design if anyone is interested.
https://www.thingiverse.com/thing:4886427
Enjoy!