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Post by MessengerofDarkness on Nov 28, 2023 23:58:59 GMT
So after looking around for a while and not finding many great options to sharpen/republish production level katana at an affordable price, I decided to order some hazuya fingerstones from Japan and give a go at it myself. Before this I'd only ever done a couple halfway decent acid etchings. It's been slow going on just a single side so far, but I think for a first try I'm starting to get somewhere?  |
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Post by treeslicer on Nov 29, 2023 1:12:14 GMT
So after looking around for a while and not finding many great options to sharpen/republish production level katana at an affordable price, I decided to order some hazuya fingerstones from Japan and give a go at it myself. Before this I'd only ever done a couple halfway decent acid etchings. It's been slow going on just a single side so far, but I think for a first try I'm starting to get somewhere? Bravo! Keep after it. Be sure and keep them wet, the slurry does the work of texturing.
That is a really unusual hamon. I'd find it hard to work with. Where did you get it?
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Post by zsg1313 on Nov 29, 2023 1:23:11 GMT
Looks like the lion dog or bamboo matt hamon. Personally I gave up trying traditional stone on most modern monosteel. I love the powdered abrasives nowadays.
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Post by MessengerofDarkness on Nov 29, 2023 2:03:13 GMT
So after looking around for a while and not finding many great options to sharpen/republish production level katana at an affordable price, I decided to order some hazuya fingerstones from Japan and give a go at it myself. Before this I'd only ever done a couple halfway decent acid etchings. It's been slow going on just a single side so far, but I think for a first try I'm starting to get somewhere? Bravo! Keep after it. Be sure and keep them wet, the slurry does the work of texturing.
That is a really unusual hamon. I'd find it hard to work with. Where did you get it?
Thanks! And to answer the following post it's a Bamboo Mat katana that I picked up secondhand a while back. The Hanwei frosting etch had mostly worn off and the edge was also a bit dull, so I figured there was no harm in trying to make things pop a little bit more. I'm definitely noticing that the slurry of these fingerstones seem to dry up fairly quickly, so there's a lot of pausing needed to keep things wet. Currently I'm looking into Jizuya and nugui as possible things to also try, though I'm not sure how effective either would be on a monosteel blade. |
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Post by larason2 on Nov 29, 2023 3:27:36 GMT
Hazuya, jizuya, and nugui would all be more effective if you start with a sashikomi polish, since they replace the existing embedded slurry to some extent. It's better to grind the hazuya very thin, and use a very light pressure, or you'll get the scratches you see on your blade. Alternatively, you can just round the hazuya corners!
Without the sashikomi, it's hard to say if the jizuya will do anything. Usually it helps to bring out the hada, and as you say, there isn't a hada on a monosteel blade! The slurry is darker than the hazuya, and the grit of the stone is finer, so you could get a slightly finer polish and a slightly darker colour. If you can see metal grains at the interface between ha and the ji, it will pick them out better, but usually you have to sashikomi to see those first.
Nugui darkens the ji, and brings out the hada a bit as well. With a proper sashikomi, you can get different colours reflected from the grains, not sure this will show without a sashikomi. Nugui also changes how the hamon looks when you look at it at an angle, bringing out different characteristics than when looked at straight on. But if it's monosteel, there might not be much to see! There are different recipes of nugui that give different colours, and highlight different features.
So TLDR: jizuya and nugui might give different colours, give it a different look, but it won't make anything you don't already have more visible.
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