Hi. I had quite a bit of experience trying out steaming methods a few years back and arrived finally at the conclusion that steaming was not an option. One thing I noticed is that hammers seemed clearly to wear out faster... deeper grooves appeared quite quickly in relation to other approaches. Nor did I get the feeling that the voicing was stable. Often I could get a very very pleasing sound immediately, only to find the work deteriorate some few weeks later. If you have hammers that are rocks and simply can not be needled acceptably... I'd advise changing rather then steaming or soaking. Voicing by needles that has a long lasting affect is in my experience contingent upon how well you needle up the shoulders... how much of a cushion you create as it were. You want to bring up as much an elastic effect to the sound as you can without affecting the attack sound much first... some folks refer to this as building up the power of the hammer. Once you have a nice ... shall we say... <<boingy>> elasticity to the sound, then addressing the attack sound can be done to take care of a pianists comments that go along the lines of brightness, glassy... etc. You will find that with a good cushion, attack voicing will be very stable. Of course... any piano that is used aggressively 30 hours a week will wear out quickly... and not just in relation to voicing. But if you are witnessing an instrument that only seems to experience hammers harding up with moderate use after 6 months, and things like key bushings and other wear and tear parts do not seem to be similarly affected... then perhaps its your general needling approach that needs adjusting. Cheers RicB I have been tuning a piano twice a year for about 3 years. About once a year my customer complains that the piano is too bright, so I voice it down and make it a little more mellow than he likes because he say it will be bright again in about 6 months. He wants something more permanent. I hate to change these hammers because they still look good. What's the consensus on steaming? Does it last? Al Guecia
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