Renewal of circular whetstone (4)
As mentioned above, the new circular whetstone is a narrow type, but the conventional Sakai standard type, which is wider, would be much heavier, so we can imagine that the replacement work would be quite dangerous.
円砥のリニューアル (4)
前述の通り、今回新調した円砥は幅の狭いタイプですが、これより幅の広い従来の堺標準のものだとずっと重たいはずなので、取換作業も相当危険なものだろうと想像がつきます。