この動画は青森県が提供する映像素材です。利用規約に同意することで誰でも映像素材として利用できます。(利用規約 は下記ダウンロードURLのページにあります。)
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藩政時代、城下町弘前には100軒以上の鍛冶屋があり、日本刀をはじめとする武具や様々な農具が製造されていました。これらの打刃物は津軽打刃物と呼ばれ、今でも優れた切れ味と耐久性を持つ刃物として、包丁、ナイフといった刃物、鍬・鋤といった農具から、日本一のりんご栽培を支える摘果・枝切り用の剪定鋏などに用いられています。2007年、新しい世代に伝統の刃物を伝えるため『情張鍛人(じょっぱりかぬち)』というプロジェクトも立ち上げ、活動を展開中です。
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【撮影日】2010年7月21日 【撮影場所】弘前市 【映像時間】60秒 【映像素材番号】10072101406500A-0401A 【ランク】A
【ダウンロードURL】
http://www.pref.aomori.lg.jp/amcp/10072101406500A-0401A.html
@CATRAUK These knives are likely going to be harder than the vast majority culinary knife produced in Europe. Also Shirogami steel is known to spark on water cooled wheels even when other steels don't.
JonoNZ110 1 month ago
Hi BBE
I am a cutlery engineer/ scientist with 43 years experience and I see the softening of steel all the time when grinding and sharpening knives takes place without care. If you wish to visit the extensive CATRA knife laboratories in Sheffeld UK I will show you a demonstration of the problem and the solution how to solve it
CATRAUK 1 month ago
@CATRAUK no, it doesn't. sparks mean nothing, sparks are pieces of metal ripped off in high speed and taken to a temperature where they oxidize and glow. all it means is that the wheel has a high speed. and besides, the edge loses its heat treatment only when it's over 200-300degrees celsius for HOURS on end. if that blade would get even to 70degrees celsius, he couldn't hold it in his hands no more cuz it would burn him. trust me, I'm an engineer
BBoyEmanuel 1 month ago
@CATRAUK the tool is not necessarily heat treated yet making this irrelevent, unless the tool reaches its decarburizing temperature. still, generally it is best to keep the edge cool anyway....
liamg1995 1 month ago
despite the water the sparks indicate he is over heating the cutting edge, which results in a softer knife edge and significantly less life.
CATRAUK 1 month ago
Mr Miyagi!?
Demoman42 1 month ago
lol looks like he is riding a GSXR
luked1964 1 month ago
can i come?
kukurikukukuru 5 months ago