This method was not developed by a beginner. It has been used on thousands of pianos over 2o years and tested by very competent working technicians.
I was the luck one to meet my mentor and see just how amazing it was. I got his permission to publish and share the techniques with the world wide piano technician community.
There is no proof able to be found about your comments on the elasticity of the shoulders and we do not focus on shoulders because the strike point, which has been avoided for decades, is where the real work is done.
The Rapid Voicer method is for service voicing and not factory voicing. It is "RAPID" and it takes 5-10 minutes to complete. It does not mimic factory voicing or new hammer preparation and this work is done previously in the factory.
When a technician works every day in homes with pianos that need their tone restored and the budget is limited... and I mean would not allow 5-10 hours of the voicing work that has been taught previously, the Rapid Voicer saves the day and it can make technicians a lot of money and helps them build a strong reputation. Why? Because in a very short time, the piano owner is in love again with their instrument.
I am a young technician and I have seen this on every level of instrument from the concert level piano to the basic home upright. It just works. Why would you believe me anyway??? Just take a moment to read what the technicians say who have tried it.....They are brave and they are also ahead of the game now with this technique. http://www.pianotunertools.com/pages/testimonials