The final headstock thickness in the video was 8.9 mm rather than the 10 mm thickness I had originally intended. Serendipitously, the final headstock thickness of 8.9 mm works better with the tuning pegs used (as there is a white top cover -- not shown in the video that is included when you buy these tuning pegs -- which requires a tiny bit of additional extra space).
The final headstock thickness in the video was 8.9 mm rather than the 10 mm thickness I had originally intended. Serendipitously, the final headstock thickness of 8.9 mm works better with the tuning pegs used (as there is a white top cover -- not shown in the video that is included when you buy these tuning pegs -- which requires a tiny bit of additional extra space).