The DVD presents a nice over view of how; first the tamahagani/iron for the samurai sword is made and follows a sword till end, thru the hands of the blacksmith to the polisher. The DVD also features a test between the Broadsword and the Katana, cutting test, which I find unneeded. A nice bonus is the adding of samurai training, by one of Japans samurai teachers. If you are interested in expanding your knowledge of the Katana, then I will recommend this DVD.
Personally I could not care less for the sword test and anything which has to do with other swords than the Katana, and this to me is the only bad thing about this DVD. I can therefor not give it five stars, so in my heart, even though it is a good documentary, I can only give it three stars.
Still I find it worth owning, unless you have read many books on the Katana, mainly because you get to see a process which is not easy to come by in Japan today.