[pier25]

> Firstly I looked at the photos and that instrument is on gut. You can see it clearly here[1].

Aren't the two string on the left of that picture made of metal?

[robinsonb5]

I would think they're gut core with metal winding around them - much as the bass strings on a classical guitar are nylon with a metal winding.

On a modern instrument the core would be metal as well.

[pier25]

Ah right! Thanks for the clarification.