First look: Blue Bump

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Jun 8, 2005
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Picked up a couple Kershaws today:

ksbump.jpg


The larger of these is my new Blue Bump. I've been searching for a titanium frame lock for forever and a half, and I was just gearing up to buy a mini skirmish when some lucky poster mentioned this in a Bump vs Spec Bump debate and it clicked.

The first thing you'll notice about this knife is its WEIRDNESS. It looks very organic, like perhaps a sea creature. And things aren't much different when open. It takes awhile for you to appreciate the visuals of this knife, but when you do, it's a very unique piece and it's great to mix things up. Also, I believe that the shiny blue anodizing might make it more sheeple palatable. The anadozing by the way, is by far the most impressive example I've seen on a production knife. One of the things I've been trying to avoid among titanium framelocks are company's obsession with bead blasts, which scratch so easily. Truthfully, this is a big reason I chose the Bump.

It's a pretty sizeable knife. However, it carries like a small knife somehow. It has a noticeable heft to it also, which is surprising for extensive use of titanium, however, it's just under the noticeable in pocket level.

Fit and finish can be considered to be flawless.

The AO works really well, although it doesn't have the kick of the mini mojo.

The ergonomics are very good, although I dare say it feels VERY unspydery. Where Spydercos put lots of strong curves into their handles and choils for specific holds, this is a much less rigid design. It works about as well. It allows my full hand on the handle, something I enjoy, although not rare for a blade length like this. I really like the grip the 3D titanium ridges provide. In truth, this feels like one of the grippiest knives I own, even comparable to G10. My one ergonomic complaint is that it squishes my last two fingers together just a little as my pinking is pushed up and in by the last curve of the handle. Not a big deal, and the fact I get to compare it to Spyderco ergonomics is in fact a compliment.

But make no mistake, this is a very different knife.

The S30V blade looks to be very useful, although I haven't used it for much yet. I believe everything KO said about its versatility, as it appears that he's trying to combine the slicing superiority of recurves with the easier piercing of a drop point. Like the rest of the knife, it comes off looking weird, but it's growing on me. Of course, this is Kershaw weird, which is no way comparable to Spyderco weird (on the weirdness scale), so take that into consideration. Those who are looking for something different, well, here's your knife. I'm one of those.

Locks up like a vault. Very thick titanium slabs. Very confidence inspiring.

Great flipper, one of the best I've used.

So this is a great knife in general and one I have to recommend to other titanium framelock desirers. It's so often overlooked for its weirdness, but it does grow on you.

I have number 140.

New note: It more and more occurs to me that the factory sharpness of both Kershaws is not particularly impressive. I haven't made the effort to work on it though. I hate sharpening knives. Can just barely shave hair, though in all fairness, this sort of test is not very fair to knives with strong recurves--recurves provide some real world slicing advantages you don't see on the arm hair thing, I believe.


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Update:

I've been EDCing this guy for awhile now, and here are some more observations.
This is a reasonably large (full sized) knife with a bit of heft to it, but it carries very well. A comparably sized (and also great) knife, the d`allara drop point, didn't suit me much because of just how much space it took up and how visible it was, the shiny blade (90% revealed) showing and everything. The Bump though seems to have all the proper dimensions for its blade length.

One of my initial concerns was framelock wear, as this is a knife that must always be flicked open hard (due to the AO). I'm pleased to report that there is absolutely no visible wear despite constant flicking. While my only other two titanium knives are not framelocks, so I have limited experience on the unique wear of titanium, it has been my observation with liner locks that if significant wear isn't seen fairly early on, it may never visible move. This is the case with my old Urban Shark, which never developed visible lock wear despite three or so years of hard use.

The anodized finish is holding up nicely with no new scratches. However, you can see some slight imperfections that came with it--there are a couple of tiny spots that aren't anodized and are shiny titanium underneath. They're very small and not at all noticeable, but something to look for I suppose. I recommend the anodized finish of the Bump line as opposed to the bead blast finish used by everyone else.

The pocket clip is quite attractive, and I do prefer mine with no paint on them (or whatever it is they use). However, it's a bit too lose. Sometimes it's loose enough that it concerns me (depends on the jeans I'm wearing). For the most part, it's just barely secure enough though, and I suspect that the looseness of the clip might also increase the longevity of the anodized finish directly underneath the clip.

The NIB sharpness is actually pretty dissapointing. This knife is definitely borderline dull. I've used my para for months now without sharpening it and it's quite a bit sharper than the Bump. Not a big a deal at all, in my opinion, but I do wish it came sharper. Kershaw seems to have a great reputation for NIB sharp, but both of mine must have missed out on it.

After extensively using AO, I've decided that I still definitely prefer manual openers--I like to have the choice to open it slowly. However, using AO is still a pleasure and a unique fun in itself. It's good to have a couple in my collection, but I have very few AO plans in the future, as a matter of preference, although I do intend to pick up a Spec Bump very soon for comparison.

All in all, fulfilling my expectations and I still highly recommend the Blue Bump.
 
I think I would lean toward calling it "unique" more so than weird. Or, perhaps "different". Now there are knives that look more weird to me but, once I look over the whole of this knife (including the excellent blade), I find it more unique than weird.

I handled one of these at a local store and, was considering purchasing it(actually, I still am). However, I just can't get accustom to the AO feature. It may be the easiest thing since slicing bread but, I have yet to understand its role given the smooth operating excellence exhibited by many of todays folders. I also prefer knives to be simple in execution.

Anyway, the "Bump" is a unique looking knife that carries the tone, or soul of KO knives in general. That's one reason I really like it. Of course the frame-lock is another "big" reason I like it. And, the size is to my liking. Like I mentioned earlier, I may have to acquire one before too much longer. I just need to get by the AO feature.

By the way, congrats on your new additions. The pictures are beautiful.
 
Well, if it makes you feel any better, the AO device is supposedly really really simple. I don't think it's much more complicated than a normal knife. But then, I've never taken one apart.

Weird is a compliment of mine. Two of my recent additions are the dodo and para, if that gives you a sense.

But trust me, if I didn't like how it looked, I wouldn't have bought it.

AO has no real purpose for healthy folks like us, that I can tell, except for maybe fun. In a SD situation, it simplifies things, which might be positive...no technique to mess up.

The Bump buddies up to you pretty quickly. I've had it for maybe 24 hours and I feel like I've been using it forever. You may not have a chance to get one at a decent price too much longer, although the spec bump is widely avaialble now.
 
The dealer here also had the "Spec Bump" but, I did not handle it because the salesman, who is also a hobbyist knife maker in his spare time, did not particularly like the lock/release feature on it. I don't remember why other than I think he found the mechanism somewhat idiosyncratic in nature. Maybe he just was not used to it - I don't know. Anyway, with a preference for the looks of the blue "Bump" over the blacked out "Spec Bump", as well as the frame-lock appeal, we did not spend any more time talking about the "SB".

Have you handled the "SB" and, if so what is your opinion of the release/lock feature on that knife? Maybe I will go back this week and handle the "SB". Perhaps the standard "Bump" too. Or, maybe I will wait until next month because I just spent $300 this weekend on knives and, need to give my pocketbook a break.

By the way, do you find the assisted blade release flipper protrusion at the tang of the "Bump" annoying in any way (grab your pants pocket, rub your hand when putting it in your pocket, etc)?
 
I have used an SB, and it was great. For some reason, it seemed heavier than the blue bump and bigger--I think this is all in my head because they're supposed to be very very similar. But for that reason I chose not to buy it. if it is very similar in size to the normal Bump, I think I'll order an S30V Spec Bump soon too.

The stud lock hasn't caused me any trouble, I have a mini mojo that uses it, although it's very new to me. Decent one hand closing, although I still prefer the axis and ball bearing locks. Also, I'd like to see some spring redundancy in these, like how the bb and axis locks have two springs each. Despite this, the lockup is fantastic on any of the ones I've seen, it seems plenty strong for reality and it's easy to use. Mostly I like it because it's something new and cool, and it's symmetrical, unlike liner and frame locks.

I think you'll be very happy with the Spec Bump or the Blue Bump. My main complaint about the spec bump is merely in preference, and that's the black blade. I can handle (in fact, like) TiNi coatings, but I had a knife with a matte black finish and it just scratched like crazy. I don't want a six month old 100+ dollar knife looking like a 10 year old one, but a lot of people don't care how their knife looks as long as it works fine, and I'm confident the Spec Bump will still work well after abuse. It's a surprisingly subtantial knife, both of them.

I think you'll get along just fine with either the framelock or stud lock. If you want to just play with one though, buy a mini mojo, which also features that lock (and is in most ways a very nice knife in its own right) and you can see if you like it or not for ~60 dollars, then make a decision from there.
 
That picture makes the knife look great. I do have the Blue Bump on my wanted list, but it is fairly low on the list because I always thought it looked a little off. I like weird and unique, but the knife didn't look "right" to me (versus, say, the Dodo which looks weird but "right"). The Bump looks right in that pic, and I will assume that it is because the pic is a better representation of reality than most pics. Knives usually look better in real life than in any pics (even the best pics).

I think I still want a Spec Bump first, but the Blue Bump might be moving up the list.
 
Great pics Artfully, have you looked into disabling the ao feature? Its on my list,but wish it was'nt an AO
 
I've gotten so many compliments on those photos. Unfortunately, I didn't take them ;-(. I found them on google images. Next Christmas my family might buy me a digital camera and then I can finally do my own photography.

But it really does look that good in life. One of the cool things that you CAN'T tell from pretty much any photo online is that the colors of the bump change with angles. From the side, the blue bump glows purple. It's a neat effect.

The two Kershaws I bought a few days ago are my first two AOs. I really like the AO, surprisingly (I'm kind of a knife opening/closing trick specialist), and it's pretty easy to pretend to open it slowly if you put your hand in a place to stop the blade right where it comes out and pretend to do a two hand opening. I think the AO will grow on you. Otherwise, I've been told it's not hard to disable on either, and with flippers, they should still be fast.
 
Great review!
And a beautiful knife too.

Now I'm looking forward to finding one of these to handle in person.
 
Nice review. I have taken the Spec Bump apart and the AO mechanism is indeed quite ingeniously simple in its operation. The spring could in principle fail, but I don't really see that happening. The spring could also jump out of its attachment points, but that is something that will either happen immediately, because the cutouts for the spring are to generously or it will not. The spring is simply a pretty straight steel bar which gets bend to generate the tension, but the bend is not that great, so I don't really see much of a problem her. The reason why the Bump has less of a snap than the Mini Mojo is probably due to the inertia of the longer blade in the Bump.

What I truly admire is the precision machining that is required to nest the spring and other components into the handle. Kershaw seems to be doing a damn fine job with this. :thumbup:
 
I have one too which was delivered last Thursday. Great review and I agree with everything you say. I also noticed it not being that sharp out of the box. I am going to get one of those small triangular ceramic stones. I didn't realise they were numbered! Mine is ser # 928. I like it, well made and pretty too.
 
Mine is #334, and it's the new love of my knife/life. Well done review, AM.:D The pic comes from Pioneer Valley Knife and Tool, which is an online knife site @ pvk.com I used to buy my auto knives from them on Bladeauction.com

I brought my new knife into a knife shop in my area that sells mostly high-end stuff, and they were quite impressed with the Blue Bump. They sell Microtechs, Benchmades, Chris Reeve's, some Protechs, William Henry, and even some custom Elishewitz knives. The guys behind the counter were suitably impressed with the Bump, and one of them brought out his Spyker to compare. They didn't have any of the Spec Bumps to look at, but they did have the Mini-mojo. I didn't really care for the Stud lock, but that's just my opinion.

I agree on the anodizing of the Blue Bump. Definitely classy, and VERY well done! The grippyness(is that a word?) is right up there with the textured G-10 found on most tacticals.

The frame lock is my favorite, and this one is well executed.

DD
 
I have a green Bump, I agree that's one kind of a knife, probably the pointiest one I have too. I think I would prefer it over the SB because of the frame lock and the non-tactical aspect (I would say really funky look :D). Imagine if you have to spread a big paddy of peanut butter with a SB, how are you going to clean the stud lock? huh? :D
 
Interesting your coments on the OOB sharpness... My Spec Bump that I got a few days ago was sharp but nothing compaired to the crazy sharpness of my walmart Blackout. I thought that same as you that maybe I just got a fluke.

Anyway with some practice I am getting close to the "VERY sharp" like I want it, but the recurve blade isn't very easy to sharpen.
 
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