I found the following books very helpful in learning to carve the human face:
The following is a good beginner book for carving faces in bark:
Diagram A - Facial Proportions has been modified by Doris Sheldon from a version found at Classic Carving Patterns and is used with permission.
The following table is a comparison of sweep sizes between my Flexcut Tools and their comparable Pfeil Swiss Tool sizes. My set is the 10 piece set with the addition of four gouges. Hopefully this will minimize confusion for Flexcut users as I have named only the Pfeil tool sizes in the carving instructions for the Carving Faces in Cottonwood Bark - Wood Spirit project.
10/19 Mallet Tool
The following are my observations upon a general comparison of Flexcut and Pfeil Tools.
It seems that the following sizes of both tools are most similar to one another: sweep sizes 1, 3, 5 and 8.
The following sweeps also seem to be similar:
(Information compiled by Doris Sheldon www.cottagecountrycarving.com)