Thanks to everyone for the advice on playing a modern classical guitar thumb-under without nails.
Today I moved the strings over by one and used a thinner 1st string (.020" , 0.51mm), resulting in a tension of about 4 kg / string. To my surprise the tone did not suffer (except for the g string being tuned down to d - I replaced it with a Pyramid 1010 silver-wound). And it's much easier to play. The wound basses sustain noticeably longer, so extra attention must now be paid to damp them. -- David -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.6.12 - Release Date: 1/14/2005 To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html