Michael: I have not used this method before, but my arm, shoulder and elbow took a vote for me to try it and I was the minority dissenter. I agree with Andre and others that you need to be able to feel how the felt is responding to the needle which a Dremel probably won't allow. This particular set of hammers is just so unyielding to normal penetration even with a single needle that I thought it was a good opportunity to try it. I have used the Vise-Grip method in the past on various calcified hammers with some success, though it doesn't really give the result that I would like. Of course, I'm not sure that any other method would have given me good results with those particulars sets of hammers anyway. When using the Vise-Grip method I only do it on the high shoulders, never near the crown. After opening up the shoulders I then go back to the needles. But, again, I have only used it in extreme cases and would not recommend it as a routine procedure. Better to use a hammer that doesn't require these sorts of gyrations. Unfortunately, we don't always have a say on which hammer is put on the pianos that we service. David Love davidlovepianos@earthlink.net > [Original Message] > From: Michael Gamble <michael@gambles.fsnet.co.uk> > To: <pianotech@ptg.org> > Date: 11/6/2003 1:44:19 PM > Subject: Fw: Yamaha hammers > > Hello David Love > When you put the needle into your new Dremel will you leave the needle > smooth and shiny - or will you take a fine emery to it to make it like a > very fine needle file? I take emery to my broaches for cleaning out centre > bushings - and indeed use a Dremel for that. Very fast acting it is. But > that's for bench work with a rheostat power supply. I don't use the tool at > full speed but slow as I can. But the thought of using a Dremel tool for > those concrete Yam hammer felts is an interesting one. Have you considered > the "Vise-grip" method? > Please report your findings! > Regards > Michael G (UK) > > ----- Original Message ----- > From: "David Love" <davidlovepianos@earthlink.net> > To: "Pianotech" <pianotech@ptg.org> > Sent: Thursday, November 06, 2003 3:01 PM > Subject: Re: Yamaha hammers > > > > I've scheduled a major voicing of a Yamaha C7 with quarried hammers for > > next week and finally broke down a bought myself a cordless Dremel > > (actually Craftsman $29.99) for the job. You need to buy a 1/32" collett > > to hold the needle. An extra battery doesn't hurt either. > > > > David Love > > davidlovepianos@earthlink.net > > > > > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
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