I wore gloves. :DFancier wrote:I'm glad I didn't have to make 820 cuts through rope on a mule without scales! Thanks for all your efforts!
It is a great knife steel.Philo Beddoe wrote:I was being sarcasticIts been my thought all along that K390 if properly heat treated will make a awesome knife steel..
Hopefully at least as good as the almighty razor blade approved AEB-L :rolleyes: :D
Oh yeah...endgame wrote:I hope youwore gloves!
Good Lord! I hope you're not sacrificing your right wrist by doing it all in one sitting (I assume you're not ambidextrous). Take care of your wrist man. We need more cutting results in the future!Ankerson wrote:This is after 820 slicing cuts through 5/8" Manila rope.
IIRC from watching Jim's vids on the tube he uses only a small section of the blade for mostly push cuts or small draw cuts less than 1" He obviously will be able to shed more light on his procedures.Blerv wrote:Hey Jim,
This is probably a question I should know but how do you account for longer/shorter blades? Do you only cut with a specific section of the blade, etc?
It seems by logic if doing full draw cuts a longer blade would hold that edge longer than a short one. A low angle edge longer than a steeper one, etc.
*Landon*sal wrote: .... even today, we design a knife from the edge out!
Thank you for info. Hopefully I will not need to replace my stones after reprofiling.senorsquare wrote:Re-profiled to 15dps. I think I worked on it for maybe 1.5 hours, but I don't remember exactly.
Blerv wrote:Hey Jim,
This is probably a question I should know but how do you account for longer/shorter blades? Do you only cut with a specific section of the blade, etc?
It seems by logic if doing full draw cuts a longer blade would hold that edge longer than a short one. A low angle edge longer than a steeper one, etc.
Well from my own testing of K294 (A11) vs S110V, K294 was around 30% higher than S110V, not sure how that would work out in the production blades though and I haven't tested K390 in comparable knives to the customs I tested in K294 and S110V.DunninLA wrote:Good Lord! I hope you're not sacrificing your right wrist by doing it all in one sitting (I assume you're not ambidextrous). Take care of your wrist man. We need more cutting results in the future!
P.S. YOu left a pretty clear latent print on that blade... sure hope you're not on the run.
Now I'm wondering if the K390 will outperform even the S110v in this manila rope cutting contest. It's a Bohler vs. CPM knock down, drag out, brawl. Can dialing back Vanadium a tad, and boosting tungsten, work together the make K390 more edge retentive than S110v, which instead of the K390's 1% Tunsten opted for 3.5% Columbian aka Niobium? Does this remind anyone of chemistry class?
If in fact K390 is, say 25% more edge retentive than S110v, does it then becomes a trade-off between the ultimate edge retention of K390 vs. the stainless quality of s110v? Can anyone comment on which steel well be more prone to breaking of a point under abuse than the other? Will s110v be easier then to keep sharp, and/or reprofile, than k390?
I don't know much about steel at all, but this was pretty much my experience with the S110V Native too. It wouldn't cut thin receipt paper without tearing, but zipped through two big cardboard boxes like a laser. I'm really enjoying this Native a lot so far! I'm looking forward to using K390 too if I can actually make usable scales!phillipsted wrote:I got the Native out of the box and immediately did some push cuts on some printer paper. It ripped and tore the paper and made ragged cuts. I tried it again on some tissue paper. Again, it caught and ripped the paper... I checked the edge with a loupe and checked the edge with my thumbnail... everything seemed OK. I scratched my head, then...
I decided to disassemble the cardboard shipping box from Spyderco. The slightly toothy carbide edge on the S110v really showed its stripes. Next, I cut a stack of used manila folders, binders, and office packaging into small strips. Zip, zip, zip
After 820 cuts on rope, it still cut printer paper? Dayum! Must be almost as good as AEB-L. :pAnkerson wrote:No it cut just fine, and it was still sharp enough to slice printer paper clean so it still had a usable edge on it.
