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Re: What is Slurry and Swarf?

Tue May 01, 2012 1:08 am

Jmbullman wrote:Well said ken well said. Does anyone out their believe the yagonoshima is one of if not the best finishing stones out their on carbon or are their better? Do tell. Peace jmbullman


Hey man. Well yes, the yagonoshima is a good stone, but there are better in my opinion. Personally I feel that it's in the same catagory was the Jyunsyouhonyama in the higher 8 or 9k range, (about double that with no presser of than the knife) But I own both a Ohira renge suita as well as a Nakayama Honyama, both of which easily give much higher finish easily in the 22k plus range. It is a good stone though, but yes there are better. Hope this helps.

Re: What is Slurry and Swarf?

Tue May 01, 2012 6:53 am

"So are you saying that cladding is what changed the stone, or just swarf?"

As best I can conjecture, it seems that the softer cladding as opposed to the harder core steel seems to change the abrasive qualities of the swarf plus slurry combination. Not quite sure why, but it was pretty noticeable.

Well 'better' is particularly unclear with naturals. I have several Nakayama as well as an Ohira Renge Suita and maybe 200 other natural stones. It is probably worth a brief digression here.

Honyama is a general term. Historically it refers to a mountain owned by an individual (Honma Tou-zaemon Toki-nari). This mountain (Honma's mountain) contains a number of well known mines, eg Nakayama. Honyama degenerated as a term to mean any sharpening stone and in an attempt to reclaim the term's value, Shou Honyama or a 'True Honyama' was used to at least narrow it down to the original mountain. So these terms now are used to describe a stone whose origin is not precisely known. Describing a Nakayama Honyama stone is in fact a redundant description since all Nakayama are Honyama (the converse isn't true). and Jyunsyouhonyama simply refers to a stone of no specific mine (unknown origin) other than to say it is from one of the mines from Honma's Mountain (Honyama).

Nakayama are generally harder and finer than Yaginoshima. Among the Yaginoshima, the Yaginoshima Asagi are among the harder of the Yaginoshimas and somewhat finer. They also tend to be more suitable for knives (in general) with the Nakayama usually more suitable for straight razors. Among the Nakayama, the
Asagi are particularly hard and fine. Personally I like using some of these harder stones on knives, but often softer stones are desirable - eg Hakka.

Probably one of my finest stones is a Nakayama Marukei stone (not Maruka but Marukei). There is an interesting history here, but this is getting even more off topic.

In short the Yaginoshima Asagi is an excellent stone, but there are certainly finer, better and much more expensive stones to be had.

---
Ken

Re: What is Slurry and Swarf?

Tue May 01, 2012 8:55 am

Thanks for the info in the stone I will have to see if mark has any of those in stock? Hope he does. Bullman

Re: What is Slurry and Swarf?

Tue May 01, 2012 2:25 pm

Great info! We need to make a "sharpening stone" section and break it down to synthetics and naturals, then we can start doing general knowledge and then stone specific reviews. Gotta go finish the newsletter first though! :D
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