<html> <body> Hi Ric,                 I have not found that the Renner AA Blue's needing that amount of needling.  Wow you must be getting much harder hammers. Regards Roger At 04:24 PM 7/26/2005, you wrote: <blockquote type=cite class=cite cite="">Nothing really magical here Mark.  Traditional voicing proceedures work best with Wurzen felt pressed at reasonable levels. You should have to open up the hammers a bit in the middle sections, tho you shouldnt have to deal with any draconian needling proceedures.  Usually somewhere between 20-40 deep needling stabs (with 3 needles in your tool) stagered up and down the shoulders is enough to get a fine basic first voice.  Usually you end up with most of your needling in the midbass through the tenor and into the C5-C6 octave area.  Lowest bass may need a bit of juice, and the highest range (at least from F7 upwards)  usually always needs a bit of help. Get ahold of Andre for some very good specifics advice on needling. But in general your first voicing is about opening up the hammers for power and the basic tone picture you are after. Not much is done up close to the crown.  Reshaping and mating is done, along with any string leveling needed before going on to the second voicing. I find it nice to wait over nite after the first voicing anyways. Cheers RicB Greetings - I have installed my first set of Wurzen hammers - from Ray - and am quite pleased with the results.  I have read numerous posts indicating that in most cases little or no voicing is required except for doping the extreme high treble, but in this case - an M & H "B" - I find that the tenor and low treble need opened up a fair amount. Knowing that there is inherently something different about the way this felt is formed I thought it prudent to check with those experienced in voicing these hammers if traditional voicing techniques apply. Anything uniquely specific about voicing this felt? Thanks! Mark Potter _______________________________________________ pianotech list info: <a href="https://www.moypiano.com/resources/#archives" eudora="autourl"> https://www.moypiano.com/resources/#archives</a> </blockquote></body> </html>