Nut & saddle Material
Instruments- discuss specific features, luthiers, instrument problems & questions
Welcome, Jon, to our little world! We're glad you're here.
As to your question of the differences between bone and Micarta or Delrin, all I can say is that I've used bone and Micarta, but not Delrin. All sounded fine to me. Bone is a bit disagreeable to cut (gives off the same smell as a dentist drilling your teeth), but has excellent sound conduction because it's so dense. It's also very traditional for use on dulcimers of the past. McSpadden makes extensive use of Micarta, and they claim it's superior to bone. I think it's fine for nuts and bridges. Delrin is known for its lubricity, and is sometimes used for HAMMERED dulcimer bridge caps. Seems strings would be less likely to hang-up when tuning. I haven't yet encountered it as a dulcimer nut material.