Mystery Flavor wrote: ↑
Wed Nov 18, 2020 10:54 am
Thanks to everyone sharing their perspectives and nice photos Cambertree! It's helpful and definitely sounds like Seki is doing a better job on the K390 now compared to the discontinued K390 Police4. I have never seen any other spyderco that came with as obtuse of a factory edge as that K390 G-10 Police4. (and I've seen multiple copies in person of that P4 and read many others comment on that obtuseness)
That's the main reason I made this thread because I'm considering the new FRN K390 models and I don't think it's too cool to buy a premium new knife and feel like it should have come with more acute edge angles. I'm not saying spyderco should have made the old P4 with some super thin 9degree edges like some people have re-profiled theirs to. Just that it can feel like a let down when the factory edge arrives more obtuse than is typical.
Maybe if I had more experience thinning out an edge I wouldn't feel so much that way. I'm considering getting a Hapstone.
No worries, and thanks for the kind words.
Putting your own more acute edge on a knife is a rewarding skill to develop.
It’ll greatly increase your enjoyment of all
And you won’t have to worry about how the factory edge arrives.
Yeah, I suspect there was a learning curve with the P4, as it was the first time K390 had been used in Seki.
Seki City, being one of the ancient sword smithing centres of Japan, is the home of many crafting familes, skilled in all the specialist aspects of knifemaking.
I suspect that the variation in some of the Seki edges comes from possibly having the final sharpening refinement done by hand. This would also explain the slight asymmetry. A custom knifemaker once told me that achieving symmetrical grinds is one of the most difficult and enduring challenges a knifemaker has to face, when grinding by hand, due to the natural strong/weak side bias nearly all people have.
Doc Dan wrote:
Man you are killing me with the picture of that Dragonfly. I am going to have to wait till after Christmas, more than likely.
Oh yeah, Doc, you definitely need to add this knife to your Dragonfly accumulation!
I’ve been using mine every day at work since it arrived.
K390 is such a pleasurable steel to use and sharpen.
Previously, I’d been using the ZDP189 Dragonfly, and I’d change up to the HAP40 model if I was doing tasks where I felt I needed more toughness.
The K390 Dragonfly seems to combine the best aspects of both - fine edge taking, high wear resistance and hardness, decent practical working toughness, and is a pleasure to sharpen.