HHH Damascus Gyuto in the works

Taz575 is back! Located in Connecticut, Tim Johnson (TAZ575) is once again offering rehandles, regrinds and full custom knife services. I make kitchen cutlery, fillet and hunting/butchering knives and EDC fixed blades as well as my own unique fabric and carbon fiber based handle materials.

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taz575
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HHH Damascus Gyuto in the works

Post by taz575 »

Heat treated this a few weeks ago in my kiln and started to grind it out today. Profile is based on my Richmond AS Laser 240mm gyuto (Makoto Kurosaki). Convexed blade road and shallow hollow on the upper half of the blade, so it's a S grind. Need to tune the grind and profile a touch and when it's done, I will do the final pointing of the blade.
HHH gyuto right.jpg
HHH Gyuto left.jpg
I will try some cutting tomorrow and see if I want to go thinner or not. It's 1095/15N 20, so I may leave it thicker as more of a medium workhorse instead of a laser.
HHH Gyuto choil.jpg
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Jeff B
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Re: HHH Damascus Gyuto in the works

Post by Jeff B »

taz575 wrote: Mon Jul 25, 2022 8:35 pm ...Profile is based on my Richmond AS Laser 240mm gyuto (Makoto Kurosaki)...
Yu Kurosaki did the Richmond Laser and after he was unmasked it was renamed the Kurosaki laser.

The choil shot looks great but instinct is saying go just a little thinner behind the edge. Your grinds are really looking great!
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Re: HHH Damascus Gyuto in the works

Post by Robstreperous »

Really impressed Tim. It's great to see you back at work on this stuff enjoying yourself these days.
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

I thought it was Makoto that did the Richmond AS Laser series??
20220726_114408.jpg
20220726_114354.jpg
I went a bit thinner:
20220726_160936.jpg
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Re: HHH Damascus Gyuto in the works

Post by Jeff B »

When's the pass around start? :mrgreen: Looking good Tim!
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

No pass around on this one!! Lol. Gotta put it up for sale, debating if I want to make up a handle for it first or let the customer pick the handle?
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

I do have a 210mm k tip in 1095 I may do as a pass around with the S grind.
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Re: HHH Damascus Gyuto in the works

Post by stevem627 »

That's a great looking knife and the grind looks nice on the choil shot. Adding the S shape will make this an interesting knife.
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

Did some test cutting last night on tomatoes, cucumbers and peppers. Did pretty well, but I need to thin down the tip a bit more and do some more testing on some harder foods (onions, sweet potato, etc).

For S grinds, I think I am going to do the normal convex grind and then the hollow grind instead of trying to do the hollow first and then convex it.
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Re: HHH Damascus Gyuto in the works

Post by ethompson »

Grind reminds me a lot of yo shigs in its current form. Looks great!
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

I went for something mid workhorse like my Tanaka Sekiso as the starting point. That way it will leave enough meat to get a nice hollow grind for food release.
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Re: HHH Damascus Gyuto in the works

Post by stevem627 »

I’m curious how a full damascus blade retains its edge when there is no true core steel?
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

15N20 is used in wood working tools and bandsaw blades, so it can take and hold an edge. It has around .75 carbon and a good bit of nickel, so the edge holding will probably be decent like most carbon steels and be pretty tough. Damascus steel loses some carbon during the process of making the damascus itself and with a 1095/15N20 mix, I would expect it to perform similar to 1080/1084 steel edge holding wise.


Found a choil shot of a Sekiso online to compare the HHH Gyuto to! A smidge thinner behind the edge and at the tip and I will be pretty close!
choil.jpg
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

20220801_164151.jpg
Got is a bit thinner and the hollow a bit deeper. But I shattered my glass platen today, so I gotta wait until the epoxy on the new one cures ☹️ before I can do more grinding.
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

Profile so far
20220801_201540.jpg
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Re: HHH Damascus Gyuto in the works

Post by taz575 »

For your viewing pleasure! Finalized the grinds, thinned it out and got a nice etch on it!
HHH Damascus Gyuto done.jpg
Just needs the handle! Still debating what I am going to use. Thinking Corian Ferrule/end cap and maybe some Curly Acacia for the main handle?
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Re: HHH Damascus Gyuto in the works

Post by ethompson »

Looks awesome. Great convex grind and the little hallows should make this a real performer. For Damascus like this I always like a more subdued handle that lets the knife steal the show, but that’s just me. Corian and acacia sounds nice.
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Re: HHH Damascus Gyuto in the works

Post by Jeff B »

That looks real nice Tim, looking forward to seeing it with a handle on it. :ugeek:
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