type 24 stone?

[markenki]

What is a "type 24" stone? What other types are there?

Thanks,

Mark

[Vladimir]

24 type 210㎜ 78㎜
30 type 205㎜ 75㎜
40 type 205㎜ 75㎜
60 type 195㎜ 70㎜
80 type 180㎜ 63㎜
100 type 160㎜ 58㎜
Razor size 136㎜ 82㎜

[markenki]

Thanks, Vladimir. Here are a couple of links I found as well (once I figured out how to search for them!).

http://www.thejapanblade.com/stonegrade.htm

http://www.kitchenknifeforums.com/sh...-heck-outta-me!


DrNaka's reply is particularly informative:

About #number.
Originally the number indicate how many stones you can carry in a old Japanese container.
So the bigger the number the smaller the stone.

But now it will indicate a size. #40 and #30 will be almost same size but #40 will have a cut corner.

Most #24 will be over double of the weight of a #30.