Not really a new subject more a change of title.
Anduins suggested we should discuss the topic and I would like to add this.
www.clavmon.cz/organ/hraciStal_eng.htm defines what we are seeking to improve as Druckpunkt, the resistance of the "tracture".
He states: "Well, you have to use the silicon cables (4mm thick) and put them under each key. Then you get a typical organ Druckpunt".
There are photos and a drawing of the installation but it is very difficult to see exactly what has been done and the explanation is not in English. The silicon cable looks as if it could be tubing, similiar to the type used for oxygenating an aquarium. Each key is fitted with cable/tube about 50mm long that fits into a small hole drilled into the key and the suppport underneath.
Has anybody used this method? What exactly is the Cable or tubing? Is it used to dampen the spring action or to replace them?
This could be an easy inexpensive way of improving a poor keyboard.