In 2007 I recorded the small scale carving tools that I was using as I carved an inconsequential demonstration piece that was a shallow relief design. It can be very helpful to see how carvers use their tools when carving dense woods such as boxwood, or other resistant materials such as mammoth tusk. Ten years later my tools had evolved from this earlier set, but the hand positions and cutting and scraping actions shown in the video are still used with the newer tools.
The video title mentions Stephen Myhre, a well known carver from New Zealand. He published a book in 2000: Bone Carving: A Skillbase of Techniques and Concepts. I was excited to read about the tools that he devised that had a historical basis in indigenous stone carving tools.
I made early tools with the concepts he wrote about, and then was the recipient of two tools that were made by him. Those tools opened the way for me to make many new tools for my toolkit that followed the concept but were shorter or longer, wider or narrower, larger or smaller steel diameter, etc.
My carving style uses these tools as knives and scrapers, for aggressive removal, undercutting, gauging with a curved edge, to the finest planing shaving strokes that finish the surface better than sanding papers.