I'd remove some cupping but not go crazy. John, you should start working on your YouTube videos... David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "John Delacour" <JD at Pianomaker.co.uk> To: pianotech at ptg.org Received: 4/22/2010 9:10:18 AM Subject: Re: [pianotech] restoration >At 06:40 -0400 22/4/10, Marcel Carey wrote: >>I'm sorry, but I have to disagree with you about the prior sanding >>of the ivories. If you look carefully at the beginning of the >>sanding video, you can see that the ivory is worn in the middle. I >>think the first sanding was mostly to flatten the ivories. The >>peroxide alome might have whiten the ivories, but sometimes you >>really have to sand them flat in order to do a more even key level >>and consistent feel from one key to the next. >I prefer to to remove no ivory even if the keys are cupped. I did a >Blthner overstrung last month that had very grubby and very worn >keys. The keyboard now looks very respectable and I shall have to >tell any prospective customer that the keys are not as good as they >look, If I'd sanded them level they'd be about 1/2 a millimetre >thick. >>But I do like your idea of polishing the ivories by hand to make >>them feel better. What kind of chalk are you using? >Just ordinary powdered chalk (CaCo3) that you can buy at any builders >merchant's. They sometimes call it line chank (for plumb lines) and >it's also known as whitening or whiting. >JD >-- >___________________________________________________________________ >___ > Delacour Pianos * Silo * Deverel Farm * Milborne St. Andrew > Dorset DT11 0HX * England > Phone: +44 1202 731 031 > Mobile: +44 7801 310 689 >___________________________________________________________________ >___
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