The August '04 edition of the American Bee Journal has an interesting article on page 637 entitled "Tools of the Trade" by Gene Kritsky.
He has been writing a series of articles which focus on historical beekeeping. This series of articles has detailed some interesting concepts and equipment that could be useful to a top bar hive beekeeper.
I wonder how effective the 'Swiss engraved wax pressing roller' was? It took me a minute to realize that it creates horizontal foundation. I guess I've worked in the vertical too long :> ) Could beekeepers in the past have solved the comb centering problem?
Looks like I will have to create another little mold for my top bars.