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to-ishi@uΞ | ||||||
KEY WORD :@architecture / tools | ||||||
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A whetstone, grinder, or grindstone. A tool used
to sharpen the blade of a plane or chisel. Carpenters used a set of ranging whetstones
from very coarse, 800 grit to an unbelievably fine 6000 grit, a coarse, rough whet
stones were called arato ru, the whet stones midway between rough and smooth
were called nakato u, and a very smooth grinding stone was called awasedo
u. A blade was sharpened in stages: first sharpened with the arato, then
the nakato, and finally the awaseto was used to achieve a fine cutting
edge. A flat-surfaced, metal whetstone called kanato-ishi ΰuΞ, was is used
to grind down the back of a blade, and grinding was easier when the kanato
was sprinkled with a small amount of emery powder. The arato was made of sandstone, mainly from Oomura εΊ in Nagasaki prefecture, the nakato was made of shale, taken from Amakusa V in Kumamoto prefecture, and the awaseto was slate from Takao Y in Kyoto. However, now that sources of naturally occurring stone have declined, most whetstones are man-made. Special rounded whetstones are also produced to sharpen tools with curved blades like the *marunomi Ϋθw and the *maruganna Ϋηξ. |
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(C)2001 Japanese Architecture and Art Net Users System.@No reproduction or republication without written permission. fΪΜeLXgEΚ^ECXgΘΗASΔΜRecΜ³f‘»E]ΪπΦΆά·B |
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