Efficiency of motion (and new guy intro)

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Aug 20, 2018
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Hi there BF, this is my first post, and I wanted to introduce myself and throw out a topic. I'll split this post into two parts. Topic first and intro at the end.

Warning: Super long... also not a topic that everyone will be interested in. If you like pulling out your knife, using it, and putting it back in your pocket. the end... that's cool with me.

I've been thinking about the process of pulling out a knife and getting it into my hand ready for action.

I'm not a secret agent or an assassin, but rather an engineer nerding out on efficiency of movement. To me, using a knife to cut a string or open an box containing another knife is an enjoyable part of my day. I'm reminded of a boxing axiom I've read: when dodging a punch, you want the punch to just barely miss you. You don't want to dodge too far out of the way. My understanding is that the further away you dodge, the more out of balance/position you are and the longer it takes you to counter.

But this isn't about boxing, it's about pulling out a knife to break down that cereal box for recycling ;)

So here's how I pull out my EDC 551-1 Grip with my first attempt at photos:

fIzSB9V


https://imgur.com/a/fIzSB9V

1. I pull out my knife by placing my ring and pinky fingers on a 1" paracord fob with knot and wrapping my other three fingers along the back half of the knife as it comes out.
2. Pinching the back half of the knife with my thumb, index and middle fingers, I flick it open with a soft wrist flick.
3. After the knife is locked in place, I shift my fingers up an inch to get into a standard grip.

Simple enough... here's my analysis:

1. fob/lanyard positioning:
I don't like typical lanyard positions on knives.
- When the fob is on the center line of the knife, it can catch on the blade, preventing it from opening, or cutting the lanyard when closing the knife.
- The fob can work it's way into the pocket, thus not being where you expect it to be when trying to pull your knife out.
My solution was to put the lanyard on the pocket clip itself (deep carry in this case).
- The fob is always outside of my pocket exactly where I expect it to be.
- It stays out of the blade path because it's not on the center line.
- the 1" length of paracord and knot at the end allow me to grasp it with my ring and pinky fingers and pull the knife out without having to reach my hand into my pocket.

2. opening of Axis lock
I've noticed that compared to other types of locks, axis locks have a very weak detent. I therefore have 3 options for opening the knife:
- thumb stud
- pulling back on axis lock
- wrist flick (easy due to the weak detent. Very gentle motion, less impact force than using the thumb stud)
Using the thumb stud and pulling on the axis lock both require me to have a full grip on the knife handle. Therefore I have to pull out the knife, shift my hands into position, and then open the knife.

Because I pull out my knife with two fingers on the fob, my thumb and index/ring fingers end up holding the butt end of the knife. This is the perfect position for a wrist flick.

I'm not talking about taking a baseball swing where you try to break the stop pin. Rather, its a quick flick/impulse, an down/up motion that is less than an inch in either direction.

Take out your folder and give this a try. Pinch the folder with your hands close to the pivot and try to flick the knife open by moving it down and up quickly (it doesn't work if you go up and then down). Now pinch your fingers towards the butt end of the knife and do the same thing. It should be easier with your fingers further back because it's easier to impart greater torque at the pivot. Depends greatly on the detent, obviously.

So by pulling the knife out, using a wrist flick, then shifting my hands up with the blade out, I save a step compared to pulling the knife out, shifting my hands up, and flicking the knife out with the thumb stud, and then getting my hand back into position.

To me, thinking about this stuff is fun. I also carry a GEC boys knife, so it's not like I really need to or care about opening a knife quickly. I see it as no different than nerding out on blade steel or MRBS or whatever else people are interested in. If anyone wants to share their thoughts on these types of things, I'd be happy to hear it!

P.S. I'm aware of the Emerson Wave, like I said I'm not into it for self defense reasons, I just like thinking about making things more efficient.

************************************

Ok now here's my intro:

I've been lurking on this forum for about a year now.
Started with a PM2, S30V, black/black. It's my wife's knife now. She likes the stabby looks of it.
Next was a ESSE 3.
Then my current EDC Benchmade 551-1. It started as a 550-1, but I messed up the tip on a Ken Onion Worksharp so decided to try the drop point. Got the blade swapped from Benchmade.
Next was a GEC 15 boys knife, 153113EO. Fun blade, got a nice patina going.

I want to get a large Sebenza 21 drop point, hopefully 2/27/18, which is my son's birthday. I don't know if I can hold out that long, since I really want one now :)

If you've read this far, thanks for taking the time to read this.

Pendexter
 
Welcome. And I can understand geeking out over certain things. A lot of people never disassemble their knives, I enjoy it, cleaning them, improving action just a little bit. I'm not super concerned about efficient motion when pulling my knives, although I carry kinda weird to begin with due to habit of having stuff in my pockets in a certain way before I started to carry my knives. You should try a flipper, you might enjoy the added (fluid) flipping motion to deploy the blade after pulling the knife from the pocket.
 
Nice to meet you and enjoyed reading your take on deployment!

I usually don’t open my folder until I’m ready to cut, so fast deployment isn’t as critical for my uses. I’m usually more keen on a safe one handed closure and re-pocket, since in a lot of cases I’m holding two pieces of whatever it is I just cut. But I can appreciate your take on blade deployment that is fluid and efficient.

Welcome and I’m glad you decided to join in on the forum!
 
I want to get a large Sebenza 21 drop point, hopefully 2/27/18, which is my son's birthday. I don't know if I can hold out that long, since I really want one now :)

Pendexter

This is the best part...
Now...on the efficiency stuff...Yes, I carry a very nice folder with a little thingie hanging on the back end, which helps in deployment.
But, MY real secret of success in this endeavor...is my 3"- 3.5" fixed blade in a leather cross-draw sheath. It offers an extremely rapid deployment which cannot be matched with a clipped folder.
I have carried a fixed cross-draw blade now for about two yrs, while simultaneously carrying my clipped folder.
END RESULT: The folder SELDOM gets pulled.
 
Last edited:
I like efficiency and oftentimes when I'm using my knife I am holding something in the other hand that I need to cut so I need ease and efficiency as well as reliability. This also gets into clip position, length of your fingers, type of clothing you wear, and length of the knife.

In my situation I am typically wearing tight jeans, carrying a 3.5" blade clipped in my right front pocket, usually a Spyderco. I have long fingers, I carry both tip down and tip up and I find with a blade of that size that tip down is slightly more efficient.

I typically pull the knife out by pinching the end of the blade between thumb and finger. Tip up I have to do a quick shift of the knife in my hand so I can reach the blade hole, then I can open it and go on with my work. Tip down the knife pivots into my hand and my thumb is on the thumb hole ready to open.
Many people carry different ways and can operate tip up efficiently. I can operate a short knife tip up efficiently, but I don't carry short knives. Change the blade size, the clothing, etc. and the process changes.

I have also found that for me a Spyderco model with the large blade hole is the most efficient. I've tried knives with thumb studs and flippers and they were never 100% positive because it was hard to find the stud and my finger would sometimes slip off. If I slow down to not slip off of the thumb stud then it slows the process down too much. I usually don't slip with the larger Spyderco blade holes so this makes them more efficient.
 
Thanks for the warm welcomes.

The only flipper I've tried is the Kizer Gemini. I wish that there was a knife with an adjustable detent. Either by turning a screw somehow, or by having the detent ball on the stainless steel insert at the end of the lock bar, and making it swappable with different size detent balls. Maybe it already exists? If not, someone should invent one. Or maybe I'll do it if I ever make a knife lol.

I've thought about having a cross draw fixed blade for when I wear jeans. The Gerber Ghoststrike looks really interesting, although I'd probably get something way less tactical looking. Although on a typical day, I already carry a grip (Clipped RF pocket), gec 15 (wallet), alox cadet (keychain), and vic spirit x (horizontal belt sheath). 4 blades is reasonable. 5 may be pushing it ;)

And I have thought about tip up vs tip down when it comes to different size blades. For the PM2, I carry it tip down. That way I reach into my pocket and take the knife out with my thumb on the spydie hole. It seems faster than tip up, where I have to pull the knife out, adjust my hands, and then flick it open (middle finger, of course). If it was a smaller blade, and I could get my fingers into a standard grip as I pulled the knife out, tip up would be better. With larger blades, it just seems faster to pinch the pivot and rotate the knife into my palm as I flick it open.
 
P.S. I'm aware of the Emerson Wave, like I said I'm not into it for self defense reasons, I just like thinking about making things more efficient.
SD , emergency , or just for routine utility use , a wave opener is the fastest and most "efficient " method of drawing and opening a folder . Period . But it may not be appropriate in some settings and with company easily disturbed . So it's good to have alternative , quiet and non-threatening ways to open your waved folders .

I've used and practiced over 50 years with most other opening / drawing methods (both fixed and folders) to become as fast and efficient as possible , but nothing compares to the wave .

Welcome and thanks for the interesting thread ! Brings back fond memories for me . :):thumbsup:
 
Hello and welcome.
I'm very similar and completely understand what your are saying. This kind of thinking will make you faster be it fixed blade, folder with flipper, thumbstud or a wave or a gun.
The main thing is to place your hand on it properly initially or having a way of feeling it out and then locking on to it, but i ain't got to explain it to you. The fun doesn't stop a at just deploying the blade, then there's all the ways you can put it away after work. ;)
 
I'm happy to see that there are others out there that think the way that I do :)

There's always room for improvement...
 
Hi there BF, this is my first post, and I wanted to introduce myself and throw out a topic. I'll split this post into two parts. Topic first and intro at the end.

Warning: Super long... also not a topic that everyone will be interested in. If you like pulling out your knife, using it, and putting it back in your pocket. the end... that's cool with me.

I've been thinking about the process of pulling out a knife and getting it into my hand ready for action.

I'm not a secret agent or an assassin, but rather an engineer nerding out on efficiency of movement. To me, using a knife to cut a string or open an box containing another knife is an enjoyable part of my day. I'm reminded of a boxing axiom I've read: when dodging a punch, you want the punch to just barely miss you. You don't want to dodge too far out of the way. My understanding is that the further away you dodge, the more out of balance/position you are and the longer it takes you to counter.

But this isn't about boxing, it's about pulling out a knife to break down that cereal box for recycling ;)

So here's how I pull out my EDC 551-1 Grip with my first attempt at photos:

fIzSB9V


https://imgur.com/a/fIzSB9V

1. I pull out my knife by placing my ring and pinky fingers on a 1" paracord fob with knot and wrapping my other three fingers along the back half of the knife as it comes out.
2. Pinching the back half of the knife with my thumb, index and middle fingers, I flick it open with a soft wrist flick.
3. After the knife is locked in place, I shift my fingers up an inch to get into a standard grip.

Simple enough... here's my analysis:

1. fob/lanyard positioning:
I don't like typical lanyard positions on knives.
- When the fob is on the center line of the knife, it can catch on the blade, preventing it from opening, or cutting the lanyard when closing the knife.
- The fob can work it's way into the pocket, thus not being where you expect it to be when trying to pull your knife out.
My solution was to put the lanyard on the pocket clip itself (deep carry in this case).
- The fob is always outside of my pocket exactly where I expect it to be.
- It stays out of the blade path because it's not on the center line.
- the 1" length of paracord and knot at the end allow me to grasp it with my ring and pinky fingers and pull the knife out without having to reach my hand into my pocket.

2. opening of Axis lock
I've noticed that compared to other types of locks, axis locks have a very weak detent. I therefore have 3 options for opening the knife:
- thumb stud
- pulling back on axis lock
- wrist flick (easy due to the weak detent. Very gentle motion, less impact force than using the thumb stud)
Using the thumb stud and pulling on the axis lock both require me to have a full grip on the knife handle. Therefore I have to pull out the knife, shift my hands into position, and then open the knife.

Because I pull out my knife with two fingers on the fob, my thumb and index/ring fingers end up holding the butt end of the knife. This is the perfect position for a wrist flick.

I'm not talking about taking a baseball swing where you try to break the stop pin. Rather, its a quick flick/impulse, an down/up motion that is less than an inch in either direction.

Take out your folder and give this a try. Pinch the folder with your hands close to the pivot and try to flick the knife open by moving it down and up quickly (it doesn't work if you go up and then down). Now pinch your fingers towards the butt end of the knife and do the same thing. It should be easier with your fingers further back because it's easier to impart greater torque at the pivot. Depends greatly on the detent, obviously.

So by pulling the knife out, using a wrist flick, then shifting my hands up with the blade out, I save a step compared to pulling the knife out, shifting my hands up, and flicking the knife out with the thumb stud, and then getting my hand back into position.

To me, thinking about this stuff is fun. I also carry a GEC boys knife, so it's not like I really need to or care about opening a knife quickly. I see it as no different than nerding out on blade steel or MRBS or whatever else people are interested in. If anyone wants to share their thoughts on these types of things, I'd be happy to hear it!

P.S. I'm aware of the Emerson Wave, like I said I'm not into it for self defense reasons, I just like thinking about making things more efficient.

************************************

Ok now here's my intro:

I've been lurking on this forum for about a year now.
Started with a PM2, S30V, black/black. It's my wife's knife now. She likes the stabby looks of it.
Next was a ESSE 3.
Then my current EDC Benchmade 551-1. It started as a 550-1, but I messed up the tip on a Ken Onion Worksharp so decided to try the drop point. Got the blade swapped from Benchmade.
Next was a GEC 15 boys knife, 153113EO. Fun blade, got a nice patina going.

I want to get a large Sebenza 21 drop point, hopefully 2/27/18, which is my son's birthday. I don't know if I can hold out that long, since I really want one now :)

If you've read this far, thanks for taking the time to read this.

Pendexter
wait a minute

shouldn't your son get the knife on his birthday? why do you get a present on his Bday?

just teasing ya. great post and just get the knife now why wait we aren't getting any younger!!

as far as drawing a knife and deploying the less you have to manipulate the better which is why I have always preferred tip down carry . tip up you have to "crawl" your hand up to obtain the best grip. the wave may be "fast" as far as the blades open on the draw but you still have to obtain a grip cause you have to keep your hand clear of the opening blade. I have never understood the love of the wave feature at least for SD . with tip down you grasp the knife with thumb and forefinger and on the draw the knifeis already properly positioned in the palm then its just a thumb flick and your ready to go . but to each their own.
 
IIRC, the Axis lock knives don't have a ball detent, but are held closed by the Axis lock mechanism itself. The relatively heavy/thick stock of the Grip and the smoothness of the Axis lock make it very easy to flick open, although I don't suggest it before the knife is broken in, and some suggest it puts unneccesary wear on the mechanism (barbell).

Efficiency of opening of most folders will be trumped by most small fixed blades, particularly with fast kydex sheaths that specifically allow for a full grip before drawing. I'm actually thinking about getting a KaBar TDI (2.3") and seeing how I like that knife and sheath design. I have a different preference for my EDC knife shapes, but in all reality, 99.9% of my actual daily knife uses would be served by the TDI setup or similar, e.g. BM Azeria.

My most carried knife is a Buck 112 carried in the rear pocket, positioned so that when I grab it I can grab the blade and flick the handle down, now-a-days called the Spydie drop. For other knives I carry in rear pocket with the blade facing my wallet, which puts the thumbhole/thumbstud right under my thumb when I pull it out of my pocket. When I use a sheath for my folding knives, I usually have the knife placed in the sheath which gives me a similar thumb placement when I draw it out.

Yes, I geek out on some of these things too, mostly because it's easier to deploy without too much fuss when I'm busy.
 
IIRC, the Axis lock knives don't have a ball detent, but are held closed by the Axis lock mechanism itself. The relatively heavy/thick stock of the Grip and the smoothness of the Axis lock make it very easy to flick open, although I don't suggest it before the knife is broken in, and some suggest it puts unneccesary wear on the mechanism (barbell).

Efficiency of opening of most folders will be trumped by most small fixed blades, particularly with fast kydex sheaths that specifically allow for a full grip before drawing. I'm actually thinking about getting a KaBar TDI (2.3") and seeing how I like that knife and sheath design. I have a different preference for my EDC knife shapes, but in all reality, 99.9% of my actual daily knife uses would be served by the TDI setup or similar, e.g. BM Azeria.

My most carried knife is a Buck 112 carried in the rear pocket, positioned so that when I grab it I can grab the blade and flick the handle down, now-a-days called the Spydie drop. For other knives I carry in rear pocket with the blade facing my wallet, which puts the thumbhole/thumbstud right under my thumb when I pull it out of my pocket. When I use a sheath for my folding knives, I usually have the knife placed in the sheath which gives me a similar thumb placement when I draw it out.

Yes, I geek out on some of these things too, mostly because it's easier to deploy without too much fuss when I'm busy.
Check this guy out. It starts at 4 minutes he explains how to whip backlocks out.
Buck 110 opens like an auto this way. Haven't tried 112 but I don't beleive its going to be an issue. You can do it to detent knives but they open too violently, I don't like that lol.
@DeadboxHero whatup Shawn :)
I did that rotating thing to ffg delica, although it's very hard, thanks for video.
 
I carry tip down with no lanyard.

I pinch the top and pull as my thumb slides to the spydie hole. As that happens the back of the knife rotates up into my palm while my fingers close slightly and turns the knife spine up-ish to about 45. This helps my hand find the hole and gives leverage for opening. Once open, my hand spins the knife blade down and my hand is where it needs to be to start cutting.

Efficiency really comes into play when doing the cutting to minimize repetitive stress injuries and fatigue.
 
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