Slightly Tweaked Positron - & small review

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Mar 4, 2014
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So I'm trying to give my new Spyder Positron a bit of pocket time, in the hopes it could be a longer standing EDC. I don't know why, but I keep comparing this to the ZT0450. Even though the zt is titanium, and the Spyder is CF, I think they are really going after the same market....mid-sized, lightweight edc. But....I just really like the look of CF, especially for EDC Gentleman's carry.

So far, the 450 action beats the Positron by a long shot. It's smooth, but I cannot get the blade free floating for the life of me. Most of the time opening happens fine. But a good 30% of the time a wrist flick is needed. Since both are flipper only with no other opening option, I'd say this is pretty critical (both on pivot bearings). The 450 is 100% rocket to solid lock.

The second most notable feature is the lock accessibility. There is no scale choil recess for easy thumb access. I found myself needing to flip the knife over, and use index fingertip and/or nail to unlock (using both hands). So in the pics below, I deepened the front CF just a bit. Maybe between 1/16" and 1/8" at the most. It's now much easier to release with the thumb, although the lock jumping is still quite sharp. At least it can be done now without pain or damaging skin.

The third thing that I noticed within the first few minutes of ownership was the very sharp point at the end of the scale (tip side). This could just be my hand geometry, but it bugged me. A scale the size of a GB wouldn't be an issue, but this is a small knife. So I knocked off the very point on both sides. It's not a big thing, but the point dug into my palm when locking in to flip blade open. Now no longer noticeable. Very comfy.

Like most of my Spyder's, the blade came sharp out of the box with even/balanced final grind. Probably 60% of my new purchases go straight on the KME for a new edge. I'd rather get some use out of a blade before sharpening, but dullness or uneven geometry really bug me. I don't mind the S30V steel, but do not think it can sustain premium prices in a smallish production knife any longer. The S35VN in the ZT seems to hold an edge a bit better than most of my S30V blades. I know that can vary greatly by heat treat, but that's just an opinion. Love the wire clip. It does not draw attention, very functional, and does not cut up pockets over time.

Personally I think this knife should fly off the shelves in the $120-$130 price range. But I really have a hard time telling people that it's a $280List/$170Street priced knife. Especially if it's someone that has handled many of my other mid-priced knives. Overall I do really like it. It looks great, carries great, and very functional. I do think it needs a bit more refinement for prime time, but if you have the cash, it's definitely worth checking out.

Hopefully I didn't bubba this thing too bad. I really liked the clean sharp lines in it's original form, but it's now at least usable to me and will not just be a dust collector. Feel free to critique if desired. I can take it....unless you slander my Mother, then be prepared to live with a new "spydie hole". ;)

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A little follow up. I ended up taking the right slab lock access down to just a hair over the liner, without exposing it. Even a bit better, but still needs just a little something else. I can't put my finger on it. Maybe it would be better with a more traditional lock texture. Get rid of the deep cogs, and just use a more simple jimping texture.

I like this knife, but I want to REALLY LIKE it. I just think that a smallish light edc needs just a bit easier lock access.

Don't know if the pic shows well, but still only removes about 1/8" of material from the top of the right slab. But still needs a tiny bit more. Or just a slightly "prouder" lock top.

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Nice tweaks! Thanks for the review, too.

I looked at the 0450 as well before ponying up for the Positron. How's the cutting performance between the two?

The Positron is a really good size for me. The flat on the butt end fits perfectly into my palm and against my thenar eminence when I pull it down to deploy. My ring finger naturally finds the dip in the wire clip for additional purchase as well.
 
Both are flat ground, but the Positron is full flat. So on basically the same depth overall, the Spyder is a better simple slicer. But the 450 is still an amazing little cutter. I kind of like the larger belly of the 450 for certain everyday cutting tasks. I've put my own edge on the 450, so it out cuts the Positron by a long shot. But I expect the Posi to be just as spectacular after my re profile and "frosted jewel" edge (my signature edge) [emoji41].

I like the slightly thicker grip of the Spyder. You definitely cannot discount the looks of either knife. Stonewashed titanium with clean lines is a very attractive look, but the solid polished CF on the Spyder is just flat out gorgeous. And being a liner lock, there is no chance of lock grip, requiring more force to fire. If only the Positron had the KVT pivot & detent, and a newer steel, it would be unstoppable as THE lightweight EDC.

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Looking forward to seeing and reading about the frosted jewel edge on the Positron.
 
Looking forward to seeing and reading about the frosted jewel edge on the Positron.

The wife and I are playing hooky for the weekend and letting the rest of the Fam defend for themselves. But will be taking a bunch of blades I want to edge, so this one is one I want to turn into a laser. Hopefully I'll have some time to "play" with them. [emoji12]. The nicely stonewashed blade on the Positron would look great with a full polish or jeweled edge.
 
I played around with the Positron again. I put an edge on it that keeps taking little slices out of my fingers. Not sure what the original edge was at, but I took it to about 18 degrees (well, a hair under that). It was a "working" sharp out of the box. But now it's a laser. [emoji41]

I tried to capture the slightly "jeweled" edge that I like. But pictures just don't do justice. Some of the different knives just end up spectacular. This one is just average, but I'm still pleased with it.

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View My Video
 
Not sure what the original edge was at, but I took it to about 18 degrees (well, a hair under that). It was a "working" sharp out of the box. But now it's a laser. [emoji41]

I talked to the ever friendly folks at Spyderco recently:
"All of our Spyderco knives are factory sharpened at an angle between 16 to 18 degree on each side (32-36 degrees total). We suggest to our customers that they sharpen their knives at a 20 degree angle on each side (40 degree total)."
 
Yeah, that's what I thought also. But this one was pretty obtuse. I used a digital level when setting up my KME because I was curious, and triple checked it as it was quite different. Guessing that the out of box angle was around 21-22 degrees, maybe even a hair more. Since this knife is not really designed for heavy usage, I much prefer the new angle. And may even take it down to 16-17 in the future.

I don't know why I'm so obsessed with this model. I just really like it even though there are a few things I would like changed. It's a great little design for my intended purposes.
 
Nice edge! I mucked my stonewash finish a bit trying to reprofile my edge down.

I hear you on the allure of the Positron.
 
Nice edge! I mucked my stonewash finish a bit trying to reprofile my edge down.

I hear you on the allure of the Positron.

Blue tape is usually the key to keeping the blade from being scratched up while sharpening. But on this one, the tape didn't stick and ended up just collecting metal bits while moving around with each stroke. I was worried it would muck up my stonewash also, so I pulled most of it off. I have a few unwanted scratches on one side, but can't really be seen unless looking close in the right light.

Even though the pivot doesn't ride on rails like my zt's, it's good enough for me to call quality and functional. And I just can't stop playing with it. It's kind of like my Domino. There's something to the fit, finish, and feel that simply makes it irresistible.
 
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Tape! Genius! Too late for my blade faces, but as long as it cuts

The Positron has these quirks that could throw people off, but really work on it (for me).

The fat-looking handle actually both feels super slim in the pocket, and hand-filling. The flat butt with the sharp corner seats perfectly in my palm during deployment.
 
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