http://www.wood-database.com/pau-ferro/
This is a link about Pau Ferro wood which is being substituted for Rosewood. This is a very good looking wood grain and color. Read the comments after. They mention allergies and drying issues. However some of the issues don't effect finger board manufacture. The issues are more prominent with lathe work.
Also note Rosewood has allergy issues as well. I watched an Andertons video where the Captain noted Fender was using Pau Ferro.
This is a link about Pau Ferro wood which is being substituted for Rosewood. This is a very good looking wood grain and color. Read the comments after. They mention allergies and drying issues. However some of the issues don't effect finger board manufacture. The issues are more prominent with lathe work.
Also note Rosewood has allergy issues as well. I watched an Andertons video where the Captain noted Fender was using Pau Ferro.