Don, Challis made rims of "ferro-cement". The process is now long out of patent, so one could probably get at least general formula information from the British Patent Office. Horace >Hello List, > >In keeping with the thread of odd materials used in piano construction, has >anyone ever seen a grand piano that had a concrete rim? I ran into one back >in the seventies but unfortunately any record I had on this is missing. The >piano was located in a home near Reading, PA. > >I remember noticing a strange rim separation during the inspection. Further >investigation revealed that the rim was not made of wood. I spoke to an old >timer in the area and he replied yes, that company made concrete rims. >Anybody out there know what company this was? > >Don McKechnie >Ithaca College >dmckech@ithaca.edu
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