Side Chipping need experts to chime in

M

Marine E7

Joined
Oct 19, 2012
Messages
82
I have a 3V knife.( factory edge). I did not WSK&T convex it yet.

After usage 3 days in the field: ( hard to word this as I dont know the lingo)
On the side of the blade near the apex ( shoulder?) or bevel maybe..I have chipping but it is NOT on the apex cutting area.

What would cause side chips or material loss but NOT on the apex? This fake 3V or bad HT or was sharpened badly?

I have seen MANY chips over the years but never on just the side. AM I the first to have this happen?
Hard to believe after all the hype and charts and such that 3v would chip from camp type chores.

Any thoughts?

** angle is less then 20/side if that matters. I am no expert but it looks like 15ish
 
shinyedges said:
What knife? Any pics?
Click to expand...

Cold Steel Master Hunter 3V steel
Pics can be found online.
Going to re sharpen and convex it now with my work sharp belt system.

Also Have Bradford Guardian 3 ( M390) and Guardian 5 3V
Also White River K&T Backpacker S30v. MY current EDC. Love this knife.
Neither has any damage from 100x more use. Bradford stuff is amazing BTW.
Double HT and cryo must help a bunch.
 
I believe he's asking for pics of the damage on your knife.
 
I have production knives as well as custom in 3v. Never experienced what you described. Pics would help me to get a better idea of what's happening.
 
Are you saying "flakes" of metal are sheering off the shoulders/primary bevel (the grind)?
 
It is coated. Could it be the coating?

We need pics or all we are doing is guessing.
 
Not the coating.On the angle that leads to the sharpest part.
Never seen anything like it.

Are you saying "flakes" of metal are sheering off the shoulders/primary bevel (the grind)? yes ,but the apex has no chips.
I just convexed it with my WS machine. 80-220-6000. Now its a mirror.Like chrome.
Will see if it happens again
Can post back if any care.

**I should have snapped photos. I will if it happens again.
 
Marine E7 said:
Not the coating.On the angle that leads to the sharpest part.
Never seen anything like it.

Are you saying "flakes" of metal are sheering off the shoulders/primary bevel (the grind)? yes ,but the apex has no chips.
I just convexed it with my WS machine. 80-220-6000. Now its a mirror.Like chrome.
Will see if it happens again
Can post back if any care.

**I should have snapped photos. I will if it happens again.
Click to expand...

Yes. Please post back. And yes, please take pics! It would be a great help to the community here. I'd even go as far to ask you to replicate it. Two reasons. The MH from CS in 3v is a market buster. It is the cheapest 3v knife I am aware of in its size. It gets recommended a lot but there are not many data points in the community since it is so new. It would be important to hear if CS is having problems with their 3v. Second reason, you might have a lemon. Better to find out now than out in the field or something. If it happens again I'd contact CS (actually I likely would have the first time since there is no way 3v should do what you describe). Keep us posted!
 
Quite a few Marines I know ( claimed experts) say that often, factory edges on knives/tools chip.
However, after very first re sharpen it never happens again.

Is this a real thing? Or common?
Or are they trolling me?
 
Took forever. CS told me to send knife back.
I did. Waiting on Email back from CS crew on what happened.
 
Glad you're getting taken care of. Let us know what they say. And about the first good sharpening yes, that does happen.
 
I was surprised the edge of mine chipped so easy.
Bevel? that's just weird, something wrong.

2-29-16%20123.jpg
 
jpm2 said:
I was surprised the edge of mine chipped so easy.
Bevel? that's just weird, something wrong.

2-29-16%20123.jpg
Click to expand...

I believe the theory is, when the factory grind is done that particular edge (not the whole blade) overheats, making just that factory edge brittle. If the edge is reprofiled, without overheating, the problem is taken care of as long as the original heat treat was competent. That's why people claim they do not have any similar problems after the factor edge is reprofiled or thoroughly resharpened. A competent qc program should eliminate this problem.
 
As to your factory edge question, its pretty well accepted around here that despite the best efforts of manufacturers (and depending on the manufacture, some are better than others) that yes, the first edge may be rolly, chippy, or otherwise not as ideal, simply due to the fact that knives at most large scales of production get power sharpened very quickly, and so there may be some edge burn that can occur. Other factors like wire-edges and the like may also be eliminated with the first user sharpening.

Its my personal suspicion that because a wire-edge feels sharper, and some toothy chunky edges will work for longer that many manufacturers would rather have that in a package than an edge that doesn't feel as sharp, even if it really is. Especially high production number companies that might not have as tight of a procedure/process.

Although since you visually wouldn't be able to tell, its very likely that the reason it is so common is that its so difficult to detect that its just not considered worth the effort for the .01% percent that will notice it. Given how most people sharpen, even "outdoorsmen", you could quickly loose any profit margin trying to compensate for the minor change in overall QC.
 
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The edge is not chipping but the shoulder of the bevel is ? That doesn't make sense.If it were a laminate it might be but I don't know who laminates 3V.

Marine E7. When the maker isn't grinding properly the edge can be damaged !!! No joke . 1, 2, or maybe three sharpenings may remove the damaged area, That's why we tell makers to grind wet ! Its VERY easy to heat damage the edge. Don't be impatient , even hand sharpen .
 
You would think, MFG doing this for YEARS would have this all figured out.
MY good friend got a high end knife last week. ( wont mention name). Was cutting soft ,thin leather. Just a few strips.
Chipped to hell.
Sent back to MFG, they contacted him ASAP with more or less : Wire edge slipped passed QC.Not to make excuses but that member of the team is no longer with us.
We have sent a brand new knife back and a code for a 1 time 1 kife 50% off.
Sorry about this.
 
The answer is probably a sub par heat treat for 3v
Get a knife from Survive! Knives
They make quality stuff
 
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