Japanese idiomatic sentences #7 with sword

 

“Tsuchi” is a tool to hammer some objects and swordsmiths use this tool when they make their swords. It is called “Aizuchi” when the master hits a stand while his disciple’s hammering to train a sword blade. As a result, according to the hammering sound that the master hits at hand, the disciples hammer a sword blade adjusting its start and end timing.....