Instructables

Pinkie sized keychain knife from a Leatherman Micra

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Picture of Pinkie sized keychain knife from a Leatherman Micra
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The Leatherman Micra is one of my favorite knives, but I don't really use the scissors. The flip-out multitool action is the signature feature of Leatherman knives; that's what makes them cool, yet I don't need that feature in the Micra. What I really want is a super tiny knife I can keep on my keychain without adding a lot of weight. With a simple modification you get a knife that is half the weight and half the size of the original. All you loose is one tool -- the scissors. I haven't found any knives for sale that are as small, light, and useful as my modified Micra.
 
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Step 1: Locking pliers to remove hinge pin screws

Picture of locking pliers to remove hinge pin screws
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A pair of locking pliers can be used to unscrew the four hinge pin screws that hold the knife together. I like to use genuine Vise-Grip locking pliers because they have a very sharp, clean edge. The hinge pin screws have thread-lock in them so they will feel stiff coming out. They actually come out very easily, with little force, but you have to use the pliers the whole way while unscrewing them. You won't be able to loosen them a little and unscrew them the rest of the way with your fingers.

Step 2: Remove blades and organize

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Remove the blades and set aside the blades that will be reused. Discard the rest.

Step 3: Adjust tension

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The sides of the knife body will require a little gentle compression to adjust tension on the blades. Don't bend the sides in too much. The metal bends more easily than you might think. Squeeze a little, then test the pressure on the blades. Squeeze a bit more if necessary. The pressure is good when you can fit all the blades and they won't fall out even with the hinge pin removed.
england0112 months ago
What about a Victorinox Swiss Army classic SD? It does the same things + scissors I have a micra in my drawer and I might try this. Thanks :)
pishro1 year ago
hi, im saeid , thank you so much for learning it was so useful i made an key place , thank you again have a best wishes 4 u )
Decder1 year ago
Nice!
DM5k1 year ago
Awesome
3366carlos1 year ago
very nice. i carry a victorinox officer's knife, very small and very sharp little blade and scissors, i got to have scissors.
congokid1 year ago
with a slightly larger multitool and a using a couple of the shorter tools on it i was able to put a couple of keys in the spot where the pliers used to be.
Great idea, great work, great Inst' !…

But do NOT take this thru airport security.
Better have a second key ring when flying.
noahspurrier (author)  vincent75201 year ago
I thought the recently TSA removed this silly restriction on pocket knives with blades under a few inches. I usually check my bags anyway, but it would still be nice not to have to remember to pack this little knife in my checked bags.
nice job anyway !
It may give ideas to Leatherman for a new product !
mattdvm1 year ago
I THOUGHT YOU WERE GOING TO PUT YOUR KEYS IN AS BLADES. I THINK THAT WOULD WORK IF YOU HAD AN OLD CAR AND DIDNT NEED THE REMOTE.
noahspurrier (author)  mattdvm1 year ago
I added a new photo to Step 1. You can see that I already cut the bows off my keys. I could put the keys in a folding knife body, but that seems sort if gimmicky to me (as if my key ring doesn't already look gimmicky, I know). My main goal was just to have a light, compact key ring... I spend far too much time and effort towards achieving simple minimalism. Oh, the irony. But really cutting off the key bows is only like a five minute job with a angle grinder.
pdrift1 year ago
Dude.... I did the exact same thing about a year ago to my micra.. its the most used item on my edc lanyard/keychain.. never thought of doing an instrucrable though, good work.
I bought my micra cheap on ebay but when it arrived it had a big gouge on the scissors. So I did this to it.
pdrift pdrift1 year ago
here's mine..
IMG_20130322_210138.jpg
noahspurrier (author)  pdrift1 year ago
It looks good. I'm glad I'm not the only one who prefers the knife this way.
Khord1 year ago
Is the small washer shown in step 2 used in the reassembly?
noahspurrier (author)  Khord1 year ago
You may add the small, thin washer to the large cluster of blades increase tension. I would put it between the knife blade and flat head screwdriver as this will help increase clearance between those two blades. This would make it less likely for the knife edge to ever collide and get hung up if it were to be closed with side pressure. This has never actually happened to me, but if I were adding the washer anyway I figure it might as well also help make clearance problems less likely... I was iriginally going to mention this in the assembly steps, but it seemed like a minor detail and I wanted to keep the instructions succinct.
I dont really seen the point as I think the micra is small enough already and this just halves and removes the scissors. Not saying others wont find it useful.

I do think though that you could probably grind down some keys and attach them to the main housing of the micra.
noahspurrier (author)  shizumadrive1 year ago
The modified knife is half the weight and half the size as the original. That's the only motivation for doing this. I added a new picture to Step 1. You can see I already shave the bows off my keys to make them smaller and lighter. I don't feel the need to put them in any sort of housing to make them look like a folding knife since my motivation is to save weight. The only reason a folding knife needs a housing is to protect you from the edge; otherwise, I'd just put all the tools on a ring and let them dangle. It's just a personal preference. I don't like to carry around a heavy key ring, but I like having a small, sharp knife handy.
Yeah that makes sense. I think its just some see certain things as more useful or desirable. I may have keys that are too sharp or maybe I'd like them quieter so I think it'd be useful.

Not knocking this at all its a very interesting project.
allindsay1 year ago
I'm confused, you can already put this on your keyring, that is where mine is. Why take it apart, loose some of the tools and put it right back on a ring? Not hating, just wondering.
noahspurrier (author)  allindsay1 year ago
It's just to make it smaller and lighter. The only tool you give up are the scissors. The modified knife is half the size and half the weight of the original.
nvnusman1 year ago
Why discard any of the tools? Why not relocate them to the other handle with the same methods and keep them in your tool box againt unforseen needs?
noahspurrier (author)  nvnusman1 year ago
No tools except the scissors were discarded. All the other parts that were discarded were not tools. They were the tensioners, pins, and body of the scissors. Even the scissors I managed to turn into a functional pair by welding on handles made from the discarded tensioners.
elic1 year ago
Very nice. If you gave up the bolt on the narrow edge, you could use it as a a key ring by putting a ring instead the bolt.
Great idea and execution. Love it.
nanosec121 year ago
I have a micra in my desk that just might get taken apart, thanks to your instructible !!