[Daren]

I normally drink at the Harrison, which isn’t far from the Museum Tavern!

That ridge of solid plastic seems to have the function of gradually shortening each individual reed chamber to match the lengths of the reed tongues. This would be consistent with the current models, where the chambers have a similar shape, but carved out of a block.

Maybe the type of plastic is influencing the sound? The current models are made from a hard polystyrene. Or maybe the ‘one block’ design serves as a more efficient resonating chamber?

I like the idea of adjustable springs, though interesting that the current keyboards have no option to adjust, but are still perfectly balanced