THIS was my main gripe on my previous 'rant' about the Steinway hammers/parts/... I also like a hammer bore that is a fairly snug fit. It should never be so loose as for hammers to wobble. And for Steinway part's dept. to say that is normal just blows my mind... Best, Greg Torres ----- Original Message ----- From: "John Delacour" <JD@Pianomaker.co.uk> To: <pianotech@ptg.org> Sent: Monday, May 13, 2002 7:12 PM Subject: RE: TOOLS/Hide Glue, etc/Isaac Oleg's post > What is a standard hole? The hammers should be bored so that they are a very tight fit on the shank before knurling. The shank should then be rolled through the knurling machine to reduce the diameter so that the hammer can be turned without creaking for about 20 seconds after gluing. After that it should become too tight as the moisture from the glue re-expands the compressed shank. The hammer should never at any stage have any wobble, let alone 'fall'! If the hammers are carefully bored, hammer fitting is straightforward provided you follow the proper procedures. To have to rely on "wobble" for fore-and-aft positioning is a sign that the hammer heads have not been bored properly -- and there is at least one well-known German hammer maker whose speed exceeds his exactness. I always bore my own and save myself a lot of trouble. > > JD > > > >
This PTG archive page provided courtesy of Moy Piano Service, LLC