Demonstration of how to extract comb from a top bar.
Similar to the concept outlined in Beekeeping For All, the setup in this video seems to rely on lots of support for the comb in a radial extracting position and using sturdy older combs.
Excellent lecture from Sam Comfort covering his past with the commercial beekeeping industry and why he started keeping top bar hives.
Sam Comfort showing folks around his bee yard. He talks about selective queen breeding, top bar hives, regressing back to smaller cells and keeping bees treatment free.