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reswright
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Sep 10, 2019
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Tuyaknife Kostoba, N690/G-10/CF

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This was another suggestion from @DW1Tuya -- Like the CEBU it's designed by Michael Etorma. The CEBU's one of my favorite knives in the last few years so that's quite an act to follow, but to be fair the Kostoba is a rather different knife. It's smaller than the CEBU and has one of the recurve cleaver blades that you see more and more of these days. It's got Bohler N690, which I prefer to the D2 of the CEBU, and where the CEBU came in G-10 and Micarta the Kostoba comes with a pretty cool CF/blue G-10 layered set of scales:
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So it's nice looking. How's it flip?
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Oh, it flips nicely. Maybe not quite as evenly as the CEBU? But still very smooth and even overall. I don't know precisely why I like finger-sized choils but what can I say, I dig this blade. I've bought several 'cleaver' flippers and axis locks and tried them out and this one's got a good balance to the blade. Bohler N690 is growing on me as a knife steel. It's got a single screw titanium clip, designed to fit a notch in the handle and be held in place by that notch and a single screw. I prefer two screw clips just because the clip can twist around a single post -- and indeed when I received this there was just a little bit of play in the clip! It tightened back down and should be fine -- I think I'm going to give it a dab of epoxy to help it out. Balance overall is the strongest point of the knife. Much like the CEBU it's kind of hard to get a bad grip on this knife. The ergonomics are very pleasant. Fun to play around with. How's it come apart?
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Incredibly easy to disassemble. The build is nice and simple, with close tolerances, which is what I like to see. Unlike the CEBU with its sweet multirow bearing setup, it's got normal, single orbital bearings. But it's hard to be upset at the knife not having something it's not advertised as having. Knife buyin' 101 -- if there's any doubt, there is no doubt. This knife has the detent skating along the edge of the tang, which is one way to let a ramp wear itself in over time. Cool tech, means there's good tolerances, and also means I won't be filing in a detent ramp -- honestly, with that fine edge, I'd probably just make a mess of it. If you look closely at that picture you can see what the OEM used to lube the bearings: petroleum jelly, aka petrolatum, aka Vaseline. I see a lot of it in Chinese knives and at first I thought it was a little bogus -- but the more I think about it, it isn't all that silly. if the concern is keeping dust from mixing into the bearing works as much as it is lubrication, a semisolid lubricant like Vaseline is great for that. Put a blob of it over the bearing cage, all the dust will stay on the outside of the blob, the inside stays dust free. Something like blue lube will give the flip a little more snap, because it's less viscous and hence offers less resistance when the bearings push through it. But if you're hauling your bearing knife around a dirty dusty environment, it'll grit up the works quicker than if you use solid lube. All back together, clean as a whistle:
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The verdict: It's a solid knife and a great design, and I like it quite a bit, but would rather have the CEBU if I had to choose between the two knives. It costs more, even though it's smaller, because it has better material -- but I would have really liked to see the same multirow bearings from the CEBU. Feels like two steps forward and one step back that this one has better steel and material but just regular bearings. Your mileage may vary. As an aside: I think this knife almost wants to be a front flipper. Look at the size, the geometry, the blade angle - it's all ready for that. (Lay the Kostoba next to a very similar knife with a front flipper -- say the TwoSun Stargazer -- and you'll see what I mean). I wonder if they tried that out when they were prototyping it. Bet it works like gangbusters.
(Edited)
Sep 10, 2019
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