Don't juice them. You'll regret it in the long run. Check the hammer fitting carefully. Then 5-6 stitches in the 2-3:00 and 9-10:00 range first. Deep penetration, 10 mm, aimed at the staple. Not higher! Pound gently on the crown with the back of a voicing tool following (supported of course). See if that doesn't open up the hammer and add a bit at the upper end. Then polish the top of the hammer down to 800 or even 1000 grit (go sequentially 220, 400, 600, 800 1000). Don't take off too much material. Check the hammer fitting carefully. Allow the piano to play in some if that's not enough. Lacquer is a mistake on those hammers except maybe in the top 5-6 notes. New Yamaha hammers, FWIW, are not as hard as they used to be. Generally that's an improvement for most situations. David Love www.davidlovepianos.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of tnrwim at aol.com Sent: Thursday, November 29, 2012 5:58 PM To: Pianotech Subject: [pianotech] Brighter Yamaha We usually have knock the edge off Yamaha hammers. But a church just got a small grand where the killer octaves need a little boost. What is the recommended method for "juicing" up Yamaha hammers Wim Sent from my iPhone=
This PTG archive page provided courtesy of Moy Piano Service, LLC