Unfortunately my train horn piano project is now over and done. The train horn piano was destroyed in a shed fire last Autumn, it’s beyond any kind of recovery and I have no intention of building another one mainly due to the expense and effort that it took to get as far as I did.
It was a five fire engine blaze, thank goodness nobody was hurt.
Thank you to everyone that believed in the project, helped out and gave advice. Perhaps someone else will pick this concept up!