Pistachio Dreamer Posted December 14, 2020 Share Posted December 14, 2020 HI All, I'm experimenting with making reeds from stainless steel, the kind that is normally used in compressor valves. I know a few others have tried this and there have been some previous topics. The data sheet for a particular alloy I have brought has this advice: "A good tumbling operation giving a round, smooth edge is necessary in order to minimize stress concentrations. Tumbling also increases the residual compressive surface stresses which gives a significant further improvement in fatigue properties." In terms of concertina reeds, does anyone have any experience of tumbling the reeds post working? The increase in fatigue performance sounds welcome, if not really necessary, but I'm wondering if it has any effect on the sound, i.e. acceleration of the normal work hardening by playing = mellower initial sound. Also, rounded edges sound to me like bad news for a reed, but that depends on what sort of radius you could expect to be left with, as I doubt it will knock a lot of material off, especially if the shot is of a softer metal. What are your thoughts - is it worth the investigation? Paul. Quote Link to comment Share on other sites More sharing options...
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