How to calculate a C-extension length

Fingerboard extensions are very common in the USA, but become more and more popular in Europe, too. They have a couple of advantages over a 5-string bass, can get fitted to any 4-string bass and if they are well made, it’s reversible.
My friend Giorgio Pianzola, bass maker from Bern/Switzerland, has published a comprehensive guide how to calculate the length of an extension very exactly.

Visit for further reading (it starts in German – scroll down for English translation).

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