@@Bean_SoupTo be fair, your message doesn't have anything insightful to us, either. Mine doesn't, as well, bet I never claimed it does or that that is a requirement to begin with.
@@Bean_Soup I'd disagree, my message disencouraged wasting money from someone who owns 2 printers and has for 5 years. Yours just leaves me confused because it doesn't give any reasoning. It's also unnecessarily rude, you should get off the Internet for a while lol.
You say that, as if elite mercenaries and fighting force troops are being issued otf knives on the battlefield… moreover, implying the necessitation to explain to the crayon chewing marine why and how the knife pops out, should he be even carrying it in the first place….
Hah, I feel this hard. Any time I go to design something I am left with a pile of prototypes. I wish it was easier to recycle that stuff back into filament.
Just printed this out along with the spring enclosure for my first print on my son's A1 mini. It blows my mind how easy it was. The thing even changed the filament colors for me. Feels so close to the Matter Replicator things in Star Trek.
One of my first designed from scratch projects with my 3d printed back in 2018 was a dual action otf knife inside of a id lanyard. It has so many small parts, mid frames, using rubber bands as the spring and is generally janky. I can say, with utmost certainty, that I really appreciate how optimized and streamlined this design is.
@@almondtech I am convinced it’s changed as I’ve tried printing it again and the quality wasn’t very good. It doesn’t look like the original file is available anymore.
Finally, people taking advantage of the shapes only possible with 3d printing, instead of trying to copy injection molding design along with a truck load of screws. Thank you Sir, and congratulations of the design.
@@dirtiestharry6551 Of course it has, and it's less than 1% of thingiverse, which is filled with stuff designed to be used with screws. There is nothing wrong in supporting designers who lean the right way.
"Any sufficiently advanced technology is indistuingishable from magic." - that's what I felt like when that thing snapped back into itself. Because until now, I had no idea a sprring loaded mechanism could be designed bi-directional. Aka, it seemed like magic 🦆
Like you, this design really came to life when I printed one myself and played with the two stable states. The print is awesome, this man is a genius :D
@@KrisAdamsTVit's not two stable states..the spring throws the knife and it catches itself in the out or in position, the springs are then completely at rest. It does not push and hold the knife. The act of pushing the button gives it the tension to retract or extend. If you have built this, put your hand in front of the knife about and inch and try to get it to open. It will now just slide in and out limply with no force holding to either open or close.
Printing one right now as I watch this! I started in additive manufacturing almost a decade ago, 3D printing 6Al-4V parts for Aerospace using EBM (electron beam melting). 2 or 3 years ago I decided to get my own personal machine to play with and ended up with the Prusa MK3S+; it is a great machine and treated me well for a very long time. A month ago I bought the Bambu X1C and holy cow what a difference in speed! I've been so impressed with it that I now also have a Bambu A1 and Bambu A1 Mini to keep it company lol. Also ventured into resin printing with an Elegoo Saturn 3 Ultra.. resin is amazing but the cleanup and post processing is a nightmare, so I don't use it too often. Thanks for the model!
Out of all the 3-D printer videos I have seen this is the only one that has actually made me want to get a 3-D printer that is an amazing simple piece of engineering minimal parts at most efficiency and design
Das ist endlich mal ein _TH-cam_ Kanal aus Deutschland mit vernünftigem Englisch, für das man sich _nicht_ fremdschämen muß… Viel Erfolg, mit Deinem Kanal ;-)
What a beautiful design, honestly. So elegant, so satisfying. I consider this and the emmett gear bearing to be examples of 3D printing engineering art. Both fundamentally impractical but appreciated only for their aesthetic qualities.
All I can say is: legend :-) Absolutely love the simplicity (complaint mechanism design)… doing something this complex in only three parts which make full use of the abilities of 3D printing is just wonderfull. And it doesn’t need to be stronger since it’s a toy! Well done!
awesome design but i think I have a minor improvement to make it more reliable. I printed one and had some trouble getting it to fully latch in the open position because the hook on the blade kept just slipping off the ledge of the handle. I took it apart and bent the little arm outward a bit so it pressed against the wall of the handle as it moved, and it latched and stayed more reliably until the springs could tension enough to flick the blade to the other position. So if those little flexible arms were changed in the design to be curved outward so that the tips were probably only 1-2mm further out, i think it would work better. Or maybe my filament or printer sucks and no one else would have this problem
If I'm getting your meaning correctly, wouldn't that add some friction to the whole system, making the snapping action potentially less reliable? Extra friction would also wear down the components over time, though I doubt anyone's printing this with long life in mind.
SO COOL I love bistable mechanisms! I tried just making a simple clicky pen, which was hard to do but it opened a whole new world to me and I absolutely adore Innovative smart little ideas like this!
That mechanism is nothing but genius! I need to remember that way of harnessing the small tension build-up for such an action. Could become useful in many projects.
As a knife enthusiast I have quite a few of OTF knives. The way you simplified that action was really creative! The latches are built in instead of being square pieces of metal backed by a spring and not to mention the carrier plate that connects the switch to the springs is all built into one (watch a real OTF disassembly and you'll see how "simple" it is but requires many pieces still)
My friend, this little thing is awesome! I printed myself one in a snazzy white body with red blade. It looks awesome and once I had given it a few good goes to smooth the mechanism and shave off any loose plastic, it is working against gravity even. Really really amazing design!
Please tell me this is referring to the Wolverine claw mechanics cos I remember not a single one of those DIYs were both ways, and the ones that were were too complicated. Love the simple design of this ❤
I spent a short amount of time trying to figure out how to make a fully 3d printed OTF and ended up leaving the project behind. This is an amazing elegant design! I'm definitely going to have to print this one
I had an awesome OTF knife that I found on the sidewalk. Used it for probably a year as a glorified box cutter at work, but eventually something wore out and it stopped extending. They're incredibly handy and functional, despite the tacticool weapon image they tend to cultivate.
You are SEVERELY underrated, this is a crime to humanity that you only have 5k subscribers, your content and productions are among the best work I've seen done from 3d printing; a sincere thank you from my side.
This is the type of thing you could have tasked me with engineering and I wouldn't have been able to do it in 100 years. Never seen your channel before but holy crap, awesome video. Thanks, algorithm.
Proving the "Hidden blade" theorum is a major achievement. which is to say hidden blades that are mechanical in action, without hydraulics or electrics. well done
i just got my first printer and this was my first print after benchy. I admit that i dint got it quite right first time but after some tweaking it works fantastic and looks great 😉
I had to take a razor blade to the notches where the handles met the blade because they came out a little rounded but it works great after doing so, very cool design
The first time I came across something that really made me want a 3d printer
This is not a good reason to get a 3D printer 😂
just order it from 3d printing service if you only want this one thing
@@snerttthow does it feel to never have anything insightful to offer in a conversation?
@@Bean_SoupTo be fair, your message doesn't have anything insightful to us, either. Mine doesn't, as well, bet I never claimed it does or that that is a requirement to begin with.
@@Bean_Soup I'd disagree, my message disencouraged wasting money from someone who owns 2 printers and has for 5 years. Yours just leaves me confused because it doesn't give any reasoning. It's also unnecessarily rude, you should get off the Internet for a while lol.
This is an awesome mechanism for an assassin's Creed cosplay.
Hell yeah, good idea! Much less complex than other recreations I've seen.
yeah, just add a string and attach to your hand and finger and you are all set!
Exactly my thought!
@@dubya13207Exactly my thought!
@@yenmaster8310 Exactly my thought!
This is actually an amazing training aid to show how an OTF actually operates
For training who? Lmao
@@snerttt The people who wanna make their own OTFs maybe. :P
You say that, as if elite mercenaries and fighting force troops are being issued otf knives on the battlefield… moreover, implying the necessitation to explain to the crayon chewing marine why and how the knife pops out, should he be even carrying it in the first place….
@@QuinnKallisti I think "educational tool" is what was meant
Not really, takes considerably more force to activate a real double action otf such as a microtech.
Now do a video of all the prototypes and their issues
there are better ways to waste time
@@inadad8878my brother in christ you are on youtube, what are you doing if not wasting time
Hah, I feel this hard. Any time I go to design something I am left with a pile of prototypes. I wish it was easier to recycle that stuff back into filament.
@@Internetzspacezshipz you just throw them into a bin "for later," aka protrashtination
@@Reynsoon I can't say you are wrong. But I limit my time here.
Just printed this out along with the spring enclosure for my first print on my son's A1 mini. It blows my mind how easy it was. The thing even changed the filament colors for me. Feels so close to the Matter Replicator things in Star Trek.
One of my first designed from scratch projects with my 3d printed back in 2018 was a dual action otf knife inside of a id lanyard. It has so many small parts, mid frames, using rubber bands as the spring and is generally janky. I can say, with utmost certainty, that I really appreciate how optimized and streamlined this design is.
Worked perfectly off the hot plate. Great design and a quick print, perfect!
Did you print in pla or something else?
@@zeeshanonlyme I used Bambu PLA Basic. I looked up the print again and it was gone. The models available didn’t work at all, for me.
I’ve tried printing multiple times with no success. My kids are so disappointed 😢
@@nickdee5764 Mine hasn't worked at all, were the models changed or smth?
@@almondtech I am convinced it’s changed as I’ve tried printing it again and the quality wasn’t very good. It doesn’t look like the original file is available anymore.
That's why I'm so stunned by engineers. There is so much beauty in that sudden simplicity.
2:29 YEESSS this is exactly what I wanted to see.
testing*
Knife go BRRRRRRR
We with ur mom
@@Kapsyloffer his mom's Trans. That means yer gae
J a c k h a m m e r
I can totally see kids buying that. Perfect toy. It's fun but also knife shaped. And kids love knives.
I'm from Australia, and it seems a lot of people love knives right now.
Kids also love to wave their toys about while they run around.
@@MarcillaSmithyea but it’s not sharp
@@gabby222themoon then we could sell a sharpener accessory for an additional charge :D
What do you mean "fun, but also knife shaped" why but, and why the redundancy
Finally, people taking advantage of the shapes only possible with 3d printing, instead of trying to copy injection molding design along with a truck load of screws. Thank you Sir, and congratulations of the design.
Im honestly surprised more people don't do this. There are so many clever things you can do with 3d printing.
People thinking this is something new are only pretending to be part of the 3d printing community. This trend has been going on for years
@@dirtiestharry6551 Of course it has, and it's less than 1% of thingiverse, which is filled with stuff designed to be used with screws. There is nothing wrong in supporting designers who lean the right way.
@@aerball Not everyone that designs objects is particularly clever...
@@dirtiestharry6551Imposters are among us...
"Any sufficiently advanced technology is indistuingishable from magic." - that's what I felt like when that thing snapped back into itself.
Because until now, I had no idea a sprring loaded mechanism could be designed bi-directional. Aka, it seemed like magic 🦆
Like you, this design really came to life when I printed one myself and played with the two stable states. The print is awesome, this man is a genius :D
🪿
The Assassin Brotherhood used The Apple to see this video.
Look up microtech otf, this tech has been around for quite a while.
@@KrisAdamsTVit's not two stable states..the spring throws the knife and it catches itself in the out or in position, the springs are then completely at rest. It does not push and hold the knife. The act of pushing the button gives it the tension to retract or extend.
If you have built this, put your hand in front of the knife about and inch and try to get it to open. It will now just slide in and out limply with no force holding to either open or close.
Thank you for hitting turbo when playing with the finished product, I needed that
This is such a beautifully elegant design. Amazing use of 3D printing for the compliant spring and the double latch. Truly, well done!
A very simple yet rather elegant design, so mechanically simple yet it functions so well even fully exposed, gotta love mechanisms that work
Seriously well done on getting those tolerances just right to allow it to slide with almost no effort yet still have very little play.
Printing one right now as I watch this! I started in additive manufacturing almost a decade ago, 3D printing 6Al-4V parts for Aerospace using EBM (electron beam melting). 2 or 3 years ago I decided to get my own personal machine to play with and ended up with the Prusa MK3S+; it is a great machine and treated me well for a very long time. A month ago I bought the Bambu X1C and holy cow what a difference in speed! I've been so impressed with it that I now also have a Bambu A1 and Bambu A1 Mini to keep it company lol. Also ventured into resin printing with an Elegoo Saturn 3 Ultra.. resin is amazing but the cleanup and post processing is a nightmare, so I don't use it too often. Thanks for the model!
Out of all the 3-D printer videos I have seen this is the only one that has actually made me want to get a 3-D printer that is an amazing simple piece of engineering minimal parts at most efficiency and design
Dude for an amazing printer is only 280 and if you want the best get the bambulab A1 or a1 mini combo that lets print in multiple colours
@@phoenixcooper486 280 bucks only???
@@alekslevet ye for the a1 mini its realy cheap compared to other printers
Das ist endlich mal ein _TH-cam_ Kanal aus Deutschland mit vernünftigem Englisch, für das man sich _nicht_ fremdschämen muß… Viel Erfolg, mit Deinem Kanal ;-)
This is a perfect example of matching efficiency with minimal design! NICE!
What a beautiful design, honestly. So elegant, so satisfying. I consider this and the emmett gear bearing to be examples of 3D printing engineering art. Both fundamentally impractical but appreciated only for their aesthetic qualities.
All I can say is: legend :-)
Absolutely love the simplicity (complaint mechanism design)… doing something this complex in only three parts which make full use of the abilities of 3D printing is just wonderfull. And it doesn’t need to be stronger since it’s a toy! Well done!
Surprisingly simple. Always wondered how this mechanism worked.
The "As always, have a nice day" at the end sounds like Lock Picking Lawyer.
Maybe LPL will use one of these to open his next Master lock.
awesome design but i think I have a minor improvement to make it more reliable. I printed one and had some trouble getting it to fully latch in the open position because the hook on the blade kept just slipping off the ledge of the handle. I took it apart and bent the little arm outward a bit so it pressed against the wall of the handle as it moved, and it latched and stayed more reliably until the springs could tension enough to flick the blade to the other position. So if those little flexible arms were changed in the design to be curved outward so that the tips were probably only 1-2mm further out, i think it would work better. Or maybe my filament or printer sucks and no one else would have this problem
If I'm getting your meaning correctly, wouldn't that add some friction to the whole system, making the snapping action potentially less reliable? Extra friction would also wear down the components over time, though I doubt anyone's printing this with long life in mind.
I had the same problem. I took an exacto blade and undercut the hooks on the blade and now it works great! I didn't work at all before.
Bat knife !
It's so brilliant and makes kid question how it works. Perfect educational toy unlike other regular 3d prints.
This is ridiculously clever, and ridiculously simple. The world needs more minds like yours.
SO COOL
I love bistable mechanisms! I tried just making a simple clicky pen, which was hard to do but it opened a whole new world to me and I absolutely adore Innovative smart little ideas like this!
I just built this and I'm amazed how well it works. Printed in 2.5 hours too!
That mechanism is nothing but genius!
I need to remember that way of harnessing the small tension build-up for such an action. Could become useful in many projects.
This is a great example of what the last Steve Mould video was about!
I love the way you design, very clever an minimal part count in almost all your designs, congratulations!
I've printed a few and they are super cool! Nice design!
This is the simplest most genius otf design I've ever seen.
Incredibly simple yet effective design, genius!
A simplicity extremely difficult to achieve. Extraordinary work! 👏
As a knife enthusiast I have quite a few of OTF knives. The way you simplified that action was really creative! The latches are built in instead of being square pieces of metal backed by a spring and not to mention the carrier plate that connects the switch to the springs is all built into one
(watch a real OTF disassembly and you'll see how "simple" it is but requires many pieces still)
This design is so simple is incredible.
Really cool design, super impressive how simple and elegant the mechanism is.
My friend, this little thing is awesome! I printed myself one in a snazzy white body with red blade. It looks awesome and once I had given it a few good goes to smooth the mechanism and shave off any loose plastic, it is working against gravity even. Really really amazing design!
Damn, that’s cool, I love seeing the creativity when it comes to mechanics
It's so beautiful - spring out and in, and yet so simple
That is an absurdly neat mechanism!
Very years ago I played an knife towr game, and this kind of switchblade was my favorite
After almost 2 decades of people trying to replicate this action (IYKYK), we see it in a simple 3-piece print.
Please tell me this is referring to the Wolverine claw mechanics cos I remember not a single one of those DIYs were both ways, and the ones that were were too complicated. Love the simple design of this ❤
Replicate it from what?
@@swapbriaralt I assumed it was an Assassin's Creed reference?
@@DevinBaillie OH that makes sense too. What I said still holds true tho, its a childs dream come alive
@@DevinBaillie Yeah Assassin's Creed reference
Just printed this thing out, such a simple design that I’m going to be playing with for hours on end 🎉
This is the kind of joy the internet should always deliver. Well done!
I spent a short amount of time trying to figure out how to make a fully 3d printed OTF and ended up leaving the project behind. This is an amazing elegant design! I'm definitely going to have to print this one
Hell of a design, the engineering is so cool.
Wow, that's extremely simple! I'll definitely be printing one, the perfect little project for me to want to get out my printer again!
the simplicity of the model makes it fun to use
I bought an OTF knife at an estate sale last year, had wondered how it worked until now, thanks!
My highest respect to the designer of this mechanism!
The double spring/latch mechanism is awesome.
that compliant mechanism is amazing.
Do you mean compliant?
@@fernando47180 yes I do, thank u.
I dont 3D print but the indepth and concept was really nice to understand
Excellent video, I always found the double action mechanism fascinating, great job on explaining it and simplifying it so well!
I had an awesome OTF knife that I found on the sidewalk. Used it for probably a year as a glorified box cutter at work, but eventually something wore out and it stopped extending. They're incredibly handy and functional, despite the tacticool weapon image they tend to cultivate.
3d printing compliant mechanism's are always satisfying
You are SEVERELY underrated, this is a crime to humanity that you only have 5k subscribers, your content and productions are among the best work I've seen done from 3d printing; a sincere thank you from my side.
It’s impressive
This is just simple but amaizing engineering!
Genius simplicity! This is very well done!
Excellent stress test there at the end
This is the type of thing you could have tasked me with engineering and I wouldn't have been able to do it in 100 years. Never seen your channel before but holy crap, awesome video. Thanks, algorithm.
Omg. I had no idea how this thing works. Great video
what a fun mini lesson on the use of potential energy! epic build btw
That is such a good design man
+1 for such a simple design that does the job perfectly
That's honestly a very clever little knife.
Actual genius design.
Proving the "Hidden blade" theorum is a major achievement. which is to say hidden blades that are mechanical in action, without hydraulics or electrics. well done
Love seeing the mechanisms behind this.
the mechanisms are really smart, nice design!
What a clever design wow
For a second there i thought you'd perfected perpetual motion.
2:03 woah color! Impressive how orange changes to other colors when thrown correctly :)
Impressive simple model! Thanks!
genius design, fantastic
Thats a beautifully simple design, very well done!
Nice design, very clean
a double action locking spring is super useful. neat design
Beautiful and simple. You've got some skills man! I love it.
I don't know if all this types of knives work the same way but man you design is genius! just 3 parts!
that's soooo clever congrats man great job
This is *unbelievably* clever.
The design is genius.
Nice design, I must print this fidget knife 😍
Thank you! I was having difficulties understanding spring knife system, but after your video I completely understood it :)
Simple but wonderful design !!!
Congratulations
I always wondered how those knives worked and could never find a good explanation until now!
What a brilliant design! I'm gonna print one myself! Thanks!
Now I fully understand how my real MicroTech OTF knife works. Thanks!
I want to experiment with how big and small you could make this. This is one of the coolest 3D prints ever created 🎉
Brilliant functional simplicity! 😊👍
I printed one of these the other day. So much fun.
i just got my first printer and this was my first print after benchy. I admit that i dint got it quite right first time but after some tweaking it works fantastic and looks great 😉
This reminds me of the mark rober smallest nerf gun video. Same style of mechanisms; really cool stuff!
Such an elegant design
this is the assassin screed blade system i always wanted when i was a child
I had to take a razor blade to the notches where the handles met the blade because they came out a little rounded but it works great after doing so, very cool design