I find that shaping hammers to match the arc of hammer travel works best. Tapering is also benificial and is helpfull in reducing hammer weight if needed. I do not like checkering, do not find it necessary in the slightest and routinely smooth away all signs of checkering. I have seen polished tails check superbly on many many occasions, tho I tend to leave about a 180 grit finish on them. Doug Mahard wrote: > Hi one and all, > > What are the criteria used in determining grand hammer tail taper shape. Is > it factors of clearence with neighboring parts and weight reduction? As > most of you know, the Korean pianos come through with none of this done, > just the tail arcing and some very rough ridges for checking purposes that > always seem to tear up the backchecks prematurely. > > Thanks and a good weekend to all. > > Doug Mahard -- Richard Brekne Associate PTG, N.P.T.F. Bergen, Norway
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