I was at the BCUK Bushmoot in August and was asked by some friends if I could show them how the Egyptian method works.
Rather than me showing them I got the guys to double up and do it themselves to show them how easy it was.
They used two limpet shells as a bearing block (which they told me got eventually quite hot) and also watch out for the drill piece as they stop drilling. Notice how it does not spring away when it is released from the bearing block as the more modern single wrap method will do.
The other video on the Egyptian method going into it in more detail can be found here – Teine Eigin – Part 2 – Bowdrill – The Egyptian Method – A Video Post