you can find the the berglas effect in
his book Mind & Magic of David Berglas pg. 527
i dont know if the book is still in print i had found a copy
about a year ago in a used book store for $3
Im not sure if you took time to read the book, if so then you would knowIt's not the real explanation of the Berglas Effect
Lu Chen uses another version that you can't find anywhere.
he has a book called the berglas effect it expllains it over 60 pages wiith alot more inside have a look at vanishing inc
Im not sure if you took time to read the book, if so then you would know
there is not right or wrong way to perform the berglas effect.
Waste your money?? I'd have to disagree.