Stupid Chipping!

C

Chewy1

Joined
Jun 5, 2006
Messages
1,564
I've had my Native in S30V for about 6 months now. I put a convex edge on it by hand back when I got it (took me about 3 hours!).

Well, today was it's first real workout. We got a new water heater, and the Native was used to break down the box. All in all, maybe 20 feet of cardboard slicing. That was this afternoon. I just looked at the blade and it's got a ton of those famous little chips in it.

I thought this wasn't supposed to happen after a good sharpening! :mad::( So, do I switch to VG10 to H1?
 
Nope, just thick cardboard. I was careful to avoid the staples. Really burns me up. I've carried that knife almost every day, and feel like switching to one of my other brands.
 
cardboard is actually very hard on an edge.

it is very abrasive for a paper product, and can often contain other harder materials within the fibers.
 
I prefer VG 10 both for ease of sharpening and edge holding. You can't go wrong with this steel...
 
I find I like my VG-10 blades a whole lot. Granted, the only S30V blade that I own is a Leatherman Charge TTi, but it still works well. Didn't know that it chipped like this, though (haven't experienced it yet). What other steels will roll rather than chip? I"ve heard H1 rolls nicely.
 
Chewy1 said:
I've had my Native in S30V for about 6 months now. I put a convex edge on it by hand back when I got it (took me about 3 hours!).

Well, today was it's first real workout. We got a new water heater, and the Native was used to break down the box. All in all, maybe 20 feet of cardboard slicing. That was this afternoon. I just looked at the blade and it's got a ton of those famous little chips in it.

I thought this wasn't supposed to happen after a good sharpening! :mad::( So, do I switch to VG10 to H1?
Click to expand...

Sounds like a faulty heat treat or something.
Send it in to W&R, and there's a good chance you'll get things fixed.
My brother breaks down LOTS of cardboard boxes with his Mini Manix(S30V steel), so it's not inherent to the steel.
 
might it have to do with the angle you reprofiled the blade to?

and yeah, cardboard is nasty stuff, cutting through a few cardboard boxes just completely hosed the edge on my Kershaw JYDII (Sandvik 13c26). But since it's 13c26 it was a matter of minutes to get it hair-popping sharp again.

Shame about the chipping! I've heard that occasionally about S30V... kinda strange.
 
I would put money on the angle being to small. The S30V I've had on my Spyderco's has been bulletproof, better than my Benchmade S30V. I don't know if there'sa heat treat difference or if it's the same and just dumb luck.
I've convexed a VG-10 Dragonfly and it dulled almost after every use. I put it back to standard 40 degree on my Sharpmaker and it was perfect again.
Personally, I think Spyderco's in general don't need to be re-profiled to be wicked sharp.

Ack, long story short, if it chips, increase the angle.
 
when cutting cradboard,I heard that you need to use a tougher steel such as

cpm d2 or h1.S30v has great wear risistance but is on the brittle side.

cardboard has little hard particals in it,kind of like cutting through a brick of

butter with chunks of rock in it that slowly chips away at the edge. sorry

kind of hard to explain.:o:barf::o
 
I used my S30V Native to cut open 2 big thick boxes a week ago... they were Washer and Dryer boxes where you have to cut all the way around the bottom and then pull the top off, revealing a pallet-like bottom. I was really impressed with how my 'lil Native did. This was, of course using the factory edge. It really did not do too much damage... just a little dulling. The really good part, is that I was able to get the edge back to as good as new with my Sharpmaker in less than 5 mins. ...a record for me, I'd say. Looooooooove that Native!
 
This is very strange to me how some knives from the same company with the same steel can perform so differently. I can chop and baton wood with my reprofiled S30V knives, as well as cut metal. Cardboard is a joke, I'd simply be amazed if I chipped an edge on cardboard. Yet others here have that very thing happen. Odd. Variance in heat treat?
 
Variance in edge preparation, perhaps? S30V likes to form a burr, which will chip easily if not removed during final sharpening.
 
I have not seen this happen in my S30V Spydies and I have cut lots and lots or cardboard.
 
MY BAD! No_b00st wins the prize. Upon getting out my high magnifier, the edge was just really rolled. My edge was indeed too thin. The good news is that it took a fresh edge in a hurry for me.

Learn from my mistake, brothers, and keep your spydies at the right angle!
 
I have a native, para, am testing a UKPK, and have a Kershaw leek in s30v... Never had any problems with chipping at all. It's actually my favorite steel, along with VG10. It's a little harder to sharpen than VG10, but takes such a GREAT edge. Definitely sounds like an individual knife issue.
 
Chewy1 said:
MY BAD! No_b00st wins the prize. Upon getting out my high magnifier, the edge was just really rolled. My edge was indeed too thin. The good news is that it took a fresh edge in a hurry for me.

Learn from my mistake, brothers, and keep your spydies at the right angle!
Click to expand...

How thin did you make the edge and how do you know that it was because of that? As Vivi has shown many times with his reprofiles, super thin edges with S30V shouldn't result in serious chipping on cardboard.

I'm not saying that you're wrong, I'm just curious as to how thin the edge was and how you now know that it was the problem.
 
You must log in or register to reply here.
Back
Top