At 7:38 PM -0700 29/6/04, David Love wrote: > >. . . In response to Dale's comment, I do like to glass the block for, among >other things, the very reason mentioned in Jon's post. Sometimes you get >some drift on the block when the screws go in and what was a nice fit is >not quite as nice. Though a 100% fit to the flange may be more than is >necessary, it certainly doesn't hurt. Agreed. I suspect a good fit all the way along can aid tuning stability. > The amount of time involved in this >final step is minimal compared with the problems that can arise from a >poorly fit block. As a safety measure, and for my own peace of mind, I >think it's well worth the minimal trouble. Here here. We fit the plank with the plate inverted also. Once it is fitted to the flange reasonably well with the screw holes drilled and screws fitted, we drill a location hole for a metal dowel into each end of the pin block to plate web interface. An inverted tuning pin is driven into the pin block as the locating dowel. The plate flange is de-burred with an angle grinder to allow for an easy release of the epoxy paste, then the pin block is epoxy fitted with screws installed. We don't use wood screws for securing the pin block to the plate. Instead, we use 8 mm countersunk machine screws. Rock maple is such a good material for forming a fine thread, so we cut the threads into the pin block with a tap before fitting up the machine screws. The epoxy fit-up provides a very accurate job without costing too much in time. Ron O. -- OVERS PIANOS - SYDNEY Grand piano manufacturers ________________________ Web: http://www.overspianos.com.au Email: mailto:ron@overspianos.com.au ________________________
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