Hello !
I was so upset when the mute pedal of my old piano went broken.
It is a plastic part that is supporting the load of the cable from pedal to mechanism, that was probably to weak. On old piano it is not easy to get a new part or to repair it.
Here a picture of the broken part.
With the help of @SR we designed a new part and get it printed in 3D.
Here is the new support, ready to use.
Thank you a lot Sebastien ! Now the piano will be playing for many years !