I have a tak EF407 - a Koa 00 copy basically,

Magic little guitar (if a bit quiet) but i felt the EADGB strings were great and the low E was like playing inside a sock, so I bunged a brass pin in and left the other (plastic) pins where they were. sorted the problem out a treat.

However - I'm looking to experiment with pins a bit. Can anyone tell me your experiences with rosewood/ebony/bone/follilized mamoth ivory/plutonium/camembert etc?

Actually, if anyone can explain simply what the physics of it all is, I'd be most grateful.

Cheers,
Jon