NHK video 2 TV program, "Extreme skills" 

Great effort by both teams

It is regret that such a useful demonstration of superb skills through harmony of mind and execution having very low viewer count

No doubt about it; cemented carbide is the way forward, folks!

somebody get those people some heat! on a side note, good job from the craftsman.

My Miyabi SG2 is one of the finest pieces of laminated steel I've ever had the pleasure of using.

PM steel ( Powdermetallurgical sintered ) would have been worth a try. Very good industrial tap drills are made from that. Congrats to the smith san- well done !

Very fascinating.

10:43 hahahaha ???

Perhaps a concave arrowhead type blade ?

how sharp atomic sharp

if they used reversed u shape than they will have perfect cut.

Once again experience beats technology

Why wasn't force applied onto the pipe?