Famuswood Posted October 14, 2023 Share Posted October 14, 2023 Looking forward to a discussion of the use of shellac as an adhesive for the pad assembly Link to comment Share on other sites More sharing options...
alex_holden Posted October 15, 2023 Share Posted October 15, 2023 My limited understanding is that shellac is used on pads for brass instruments, by heating the metal cup with a flame and melting a bit of solid shellac onto the hot metal, then pressing the pad onto the molten glue. Sort of an early form of hot-melt glue. I don't think you could do that inside a concertina action box. Maybe you could dissolve some in a small amount of alcohol to make a thick liquid glue, but if you're going to do that why not just use a traditional water-soluble hide/fish glue instead? Link to comment Share on other sites More sharing options...
Richard Mellish Posted October 16, 2023 Share Posted October 16, 2023 I'm wondering whether the OP forgot to include a smiley. Link to comment Share on other sites More sharing options...
DDF Posted October 17, 2023 Share Posted October 17, 2023 I have used a thick shellac mix for valves and it seems to work fine I don't think it would be the best for "pad assembly" or pad attachment. Link to comment Share on other sites More sharing options...
mChavez Posted October 18, 2023 Share Posted October 18, 2023 I believe that traditionally shellac was sometimes used to glue accordion valves to reed plates. And, although I am no expert, I can confirm that for clarinets, etc shellac can and has often been used to glue the pads into cups - one of the reasons it works well there is because when you re-heat it, it melts and allows you to adjust the pad alignment. The same effect can be achieved a lot cheaper & easier with bog standard hot melt glue (which is not a taboo when it comes to gluing accordion pallets to the aluminium levers these days). Link to comment Share on other sites More sharing options...
Ken_Coles Posted October 18, 2023 Share Posted October 18, 2023 On 10/17/2023 at 11:52 AM, DDF said: I have used a thick shellac mix for valves and it seems to work fine I don't think it would be the best for "pad assembly" or pad attachment. I recall the late Rich Morse posting here that he used thickened shellac to attach valves (but not pads). Ken Link to comment Share on other sites More sharing options...
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