Circular Saw Kickback Killer (We used science to make tools safer) - Smarter Every Day 209

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  • Опубликовано: 17 фев 2019
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Комментарии • 6 190

  • Chad Green
    Chad Green Месяц назад +1546

    Also, #gonadularregion is safe!

    • Photon
      Photon 12 дней назад

      This is a neat idea! If I may ask, what does the hardware look like on the inside of the saw? Does it somehow transmit the data from the sensors or does it run the algorithm locally? Does this massively increase the price of the saw? Finally, how would you prevent it from learning about jostling during shipping? Does it just wait for power to start, and then stay on for some amount of time after the trigger is let go?
      Sorry, it's a lot of questions. But again this is a really neat example of how ML can be applied to devices we've had for decades. Cool stuff!

    • Shaun Jeffs
      Shaun Jeffs 21 день назад +1

      It seemed that the built-in saw brake had a significant delay before the blade actually came to a stop. Those blades can be very dangerous even if not spinning at full speed. I'd be interested to know from your HS data whether the brake is capable of stopping the blade before it reaches flesh. It looked like at 80-100 ms, the blade is already in a position to do some damage if you had and ill-placed finger in the blade path. (And yes, I know folks, you should not have your hand there in the first place, but guess what, people do it anyway, and they pay the rest of their lives for it). This is an interesting approach that is quite different from SawStop. You are attempting to prevent the dangerous contact in the first place as opposed to minimizing the damage once contact does occur. There are also many comments on here about the spring-loaded blade guard. I'd like to see in your video how quickly a guard would respond under a kickback scenario. My guess is it probably won't be able to retract in time, as this is a very quick, chaotic event. Good research though!

    • Prathamesh Lad
      Prathamesh Lad 26 дней назад

      +The Bean
      Well thanks Bean for the reply.
      I got it.
      To be clear I've never used any type of powered saw in my entire life (hand saw is my favourite one :-) . So didn't know anything.

    • The Bean
      The Bean 26 дней назад

      +Prathamesh Lad this would make the saw uncontrollable as it would be propulsing itself upwards and over the piece of wood. Sure, no-one is in front, but working with it would be near impossible. Your button idea doesn't seem stupid tough.

    • Prathamesh Lad
      Prathamesh Lad 27 дней назад

      +Chad Green
      Great Project.
      But my que is
      Why don't you just reverse the rotation (and cutting side) of the blade ?
      So let there be a "kickforward" happen (where there is no operator so might be safe) / (Also change button position on palm side so as soon as the machine launches forward our palm seperates from the button)
      But handle orientation and pressure on the cutting edge ? should be verified.

  • Bergen Mai Bolsa.
    Bergen Mai Bolsa. 6 часов назад

    NICE ,im your fan from VIETNAM.

  • My2CentsWorth1
    My2CentsWorth1 6 часов назад

    7:37 Share that with Tommy Caldwell.

  • Burton's Attic
    Burton's Attic День назад

    I have experienced kickbacks and it is no fun! Don't think any drops of anything came out but flying objects and gonadularregion are really really bad!

  • Liam Sonmor
    Liam Sonmor День назад

    Need it... now!!!

  • Gregory Saunders
    Gregory Saunders День назад

    So now you need to put the saw on a rail system so it can't kick up, and then calculate the force necessary to run the saw through the wood with out stalling, then load your rockets accordingly.. and you have to do that now because ... you are the rocket scientist 😎

  • Jia Jun
    Jia Jun День назад

    lol i really liked the four fingers bit

  • matkir child
    matkir child День назад

    Awesome,

  • Tim Peterson
    Tim Peterson 2 дня назад

    ooOOOoooh! training epochs and NNs, how many layers? cool stuff.

  • Maximilian Boost
    Maximilian Boost 2 дня назад

    You are amazing and your videos are 2 I love the non fake enthusiasm which lets me know that you are really excited about the things you are trying to share with anyone who is interested in science. You are the first one on RU-clip I feel the need to tell that you are doing a great job and that I sincerely hope that you will continue this path. Please excuse my grammar and choice of words if I oversaw any mistakes this isn't my mother tongue. Wish you just the best and an awesome day by realising how you are continuing to make my day which isn't the easiest of tasks at the moment.

  • Stephen Balon
    Stephen Balon 3 дня назад

    This is a very uncommon problem that is exaggerated in the video because.. well obviously, when you take a circ saw attach it to a chain and pin the trigger then turn it sideways in lumber it looks like a disaster waiting to happen. If you operate a circ saw, even one that doesn't have a brake, with a rather dopey level of experience it's nothing like what's being displayed. This is one of those things where, yes, granted the invention works but the problem it's solving isn't a problem that is plaguing trades people. More people in the trades are being injured gradually over time by wearing out their bodies. If you want something that sells immediately make the saw lighter, cut faster/smoother, or more ergonomic. Those are the things trades people are asking for and that's also what they put their money towards.

  • Brian Hill
    Brian Hill 3 дня назад

    This is amazing!

  • adnane Lebouiha
    adnane Lebouiha 3 дня назад

    you guys are awsome !

  • Paul Bumgarner
    Paul Bumgarner 4 дня назад

    Let me know if you want/need investors.

  • Travis Brantner
    Travis Brantner 4 дня назад

    Get ahold of me anyway you feel you can I am very interested in mabey getting in on a part of this

  • Brad ley
    Brad ley 5 дней назад

    Ill buy one from yall

  • Smile Space
    Smile Space 5 дней назад

    Seveneves is a fantastic book! I read it back in 2015 when it first released. It was really good!

  • paraiks
    paraiks 7 дней назад

    Just use the DualSaw

  • Mary Jane
    Mary Jane 7 дней назад

    That's sawsome!!

  • DailyOoopsies
    DailyOoopsies 8 дней назад +1

    Just leave the abbreviation as 'MadSKLS' (Mad Skills)

  • thr0ttl3j0ck3y
    thr0ttl3j0ck3y 8 дней назад

    I just had an idea looking at your thumbnail, how about we try an orbital circular saw? It'd be a beautiful disaster!

  • Paul-Joseph de Werk
    Paul-Joseph de Werk 9 дней назад

    Two microswitches can can do the same work as the "complex sensor" to hit the brake. Also the bowing and binding usually occurs when, you have two sides supports and you are cutting across . You should never support both sides when cutting across. Your demo produced kickback only because the saw was loose and had no one pressing it into the wood, not because the wood bowed inward, since you weren't cutting across between the supports. Just an observation.

  • Ian Ide
    Ian Ide 10 дней назад +1

    Trouble CUTTING with a saw? This one TRICK saves your manhood!!
    The only time I've actually seen kickback was improper use of the saw. Not everyone should use power tools and this should be stressed more than saving people from themselves. The idiot that destroys his nuts with a circular saw wont give birth to more idiots....

    • kperry5000
      kperry5000 7 дней назад

      I don't think that's a good way to look at things. People make mistakes when learning. Heck even professionals can make mistakes. Nobody's born with the innate ability to understand how to use a power saw. People should be able to learn from their mistakes without getting seriously injured

  • PK B
    PK B 10 дней назад

    Wouldn't it be easier to put a button on the flat part of the saw and in the front. The button would protrude below the flat metal and it would have to be pressed in order for the saw to work. Meaning the flat part of the saw is on the wood. So when it kicks back and comes off the wood the button would extend, open the circuit, and kill the motor.

  • Abhishek Khuntia
    Abhishek Khuntia 11 дней назад

    This video was outstanding man, I salute you for making this kind of innovative videos. We also need more on the same..

  • beachfiredude
    beachfiredude 11 дней назад

    Right on thanks for sharing
    A Carpenters problem
    Yup

  • M. Kharis
    M. Kharis 11 дней назад

    that MADsomething is great

  • Zyrppa
    Zyrppa 11 дней назад +1

    if i didn't understand things wrong, but wouldn't it be better if the blade spins to otherway?

    • Kytrix
      Kytrix 8 дней назад

      Yes in Europe the blade turns backwards and no kickbacks.....

  • Andre Fi
    Andre Fi 11 дней назад

    Hey, where did you get the data from?

  • Kyle Christian
    Kyle Christian 12 дней назад +1

    Destin, this was an awesome video! I’ve been woodworking a long time and love this idea. One tool is like to see this applied to is a table saw. Keep doing tool videos 👍

    • Kyle Christian
      Kyle Christian 9 дней назад

      Michami we had a SawStop at my high school and my neighbor has one. What I like about the brake used in this video is it isn’t damaging. When you stop a SawStop you have to replace the cartridge before you can use it again. If that could be replaced with what’s done here that would be a money saver for the consumer (the manufacturer probably wouldn’t want it that way though).

    • Michami
      Michami 9 дней назад

      They have a device on some table saws that have an induction sensor, so that when a had touches the blade, it's stopped instantly with an aluminum brake. I've seen tests using a hot dog, and not a single scratch on it.
      Honestly though, I didn't know this was a problem with circular saws. I've been using them for decades and never had a problem with kickback. But I'm always extra careful, use all the proper supports, and replace blades before they get dull. Not sure if that's why, or something else.

  • zztop3000
    zztop3000 14 дней назад +1

    I do't get it , kickback? You just hold the chainsaw better, that's it! This is stu*id

    • don trump
      don trump 13 дней назад +1

      zztop3000 this is meant for urbanites who will never use a tool in their life and thus cant see the flaws of the hypothesis

  • Bijan Izadi
    Bijan Izadi 14 дней назад +1

    Danger Radius

  • Hangfire-13
    Hangfire-13 14 дней назад +1

    *Doesn't a spring loaded blade shield serve the same purpose at a much lower price point?*

  • Ben Meyer
    Ben Meyer 15 дней назад +1

    Just put a switch on the base plate. Brake goes on when the switch does not detect the wood. Motor wont even start if the trigger is locked in when power is applied. No patent required, just common sense?

  • Linkyboy
    Linkyboy 16 дней назад

    I don't use saws, I don't make saws, but this is cool and I want it

  • gsxrjeff
    gsxrjeff 16 дней назад

    just reverse saw rotation

  • Prince Westerburg
    Prince Westerburg 16 дней назад +2

    Someone else made a plastic fin that stops the wood grabbing the blade. If its that or a computer, what are manufacturers going to choose?

    • don trump
      don trump 13 дней назад +1

      Prince Westerburg exactly. Plus in the example theres a chain substituting your arm.
      A chain has no push capabilities, only pull. Your arm on the other hand is already making a decent amount of force PUSHING the saw forward

  • John Farrell
    John Farrell 17 дней назад

    Nice job guys. I don't know if anyone actually reads comments so I'll keep this low effort, but if you would like some feedback from an actual 20+ year carpenter let me know. It would be along the lines of: In my experience your scenario is not what actually causes kickback on a real job, though your solution would work in the real job scenarios. The problem you are solving we would call binding. This is easy to over power with a good arm, and plywood does not do this, per your on screen discussion. There are already good solution in effect in chainsaws and table saws. Your approach may be better for hand held saws. Side fact: you were saying humans can't react fast enough to let go of the saw in an emergency. True. But there is an other thing going on. There is something in your brain stem that will not let you let go when the sh$# hits the fan. This is much more of an issue with big, industrial hammer drills. When those things catch and start to spin they will tear your shoulders apart and you can't let go. I always though of this as baby monkey holding moms fur in the trees reaction. It is a real thing. You learn to hold the drill in a way that doesn't use your thumbs so you don't have the strength to hold it if it starts to spin, so you let go thru weakness and save your shoulders and elbows. There's more if you are interested. Good luck with the idea.

  • jay gareth
    jay gareth 17 дней назад

    And I thought a paper cut was scary, who knew there was such a thing as CSK.

  • NGneer
    NGneer 17 дней назад

    Audible keeps putting seveneves in my suggested books. I’ve avoided it simply because I keep seeing it suggested by people I don’t have much respect for. You changed my mind on it. I’ll probably download it tomorrow. Thanks for that. I’m always on the search for a good sci-fi novel. I read around 60 or so last year with audible. I’m running out of good options now though.

  • Speedy Chicken
    Speedy Chicken 17 дней назад

    But no one is putting pressur foward is ut wiuld be more time

  • Peedlebum
    Peedlebum 17 дней назад

    Awesome!

  • jarrod Alexander
    jarrod Alexander 17 дней назад

    Can anybody else hearing nothing but the pop pop pop in the background song??

  • Davis Tuck
    Davis Tuck 18 дней назад

    This also needs to be in stuff like cordless drills. Because sometimes that thing twists around and freakin snaps your elbiw

  • bowow59
    bowow59 18 дней назад

    Fake, the saw don't come to you it goes away

  • yo boi
    yo boi 18 дней назад

    Isnt the same thing with a gas chainsaw

  • jtan163
    jtan163 18 дней назад

    Really curious to know about the sensor you’re using. I fly racing quads and we find that constant vibration an crashing causes our gyros to degrade over time ( they’re designed for cell phones) and we have to replace some of our flight controllers on occasional as they just don’t work after a while.

  • Stephen Hodge
    Stephen Hodge 18 дней назад

    Hey Dustin, I bought "Seveneves", and am really enjoying it!!!!!

  • Polite Cat
    Polite Cat 19 дней назад

    if it falsely trips even 5% of the time, it will get deactivated. its gotta work like 99%+ of the time.

  • Paul Debaecker
    Paul Debaecker 19 дней назад

    I don't know if it is for legal reasons or what, but the circular saw I use runs in the opposite direction (teeth going upwards into the wood). Woudl this system be necessary and would it work?

  • Antonio Renteria
    Antonio Renteria 19 дней назад

    good stuff

  • Georgy Padalko
    Georgy Padalko 19 дней назад

    Cool, modern BOSCH drills have kinda the same thing, they stop and "apply breaks" if a bit jams.
    Awesome job guys, the more manufacturers have it, the better world will be!

  • 01Versatran
    01Versatran 19 дней назад

    Isn't a neural network overkill here?

  • Ciprian David
    Ciprian David 19 дней назад

    just curious... why is this having 1.6k dislike? I mean that mechanism is really awesome

    • Ciprian David
      Ciprian David 18 дней назад

      +ensen89 agree but is not about a saw with a riving knife. this is not about how to avoid a problem but how to solve it

    • ensen89
      ensen89 18 дней назад

      Maybe because you could just use a saw with a riving knife and don't have the problem? ^^

  • JronmanBuilds
    JronmanBuilds 20 дней назад

    hopefully SawStop don't sue you guys because this tech is awesome and needed in every saw.

  • Son Nguyen
    Son Nguyen 20 дней назад

    You guys are freakin so smart. I appreciate the content.

  • Dennis Sorensen
    Dennis Sorensen 20 дней назад

    It should be on ANGLE GRINDERS!!! With a seriously fast acting brake.

  • tsartomato
    tsartomato 20 дней назад

    listening WHILE DRIVING???

  • Caleb Gardner
    Caleb Gardner 20 дней назад

    Isaiah 10:15 (SED Translation)
    Shall the ax boast itself against him who chops with it?
    Or shall the *MADSSKMLDBM circular* saw exalt itself against the *Destin* who saws with it?
    As if a rod could wield itself against those who lift it up,
    Or as if a staff could lift up, as if it were not wood!

  • Caleb Gardner
    Caleb Gardner 20 дней назад

    Verse from the end:
    Shall the ax boast itself against him who chops with it?
    Or shall the saw exalt itself against him who saws with it?
    As if a rod could wield itself against those who lift it up,
    Or as if a staff could lift up, as if it were not wood!
    Isaiah 10:15

  • Daniel Voyles
    Daniel Voyles 20 дней назад +2

    At first glance at 8:00, I thought that was blood on the ceiling from failed attempts.

  • Travis Romine
    Travis Romine 20 дней назад

    Hi Destin, I work for the company that manufactures Milwaukee power tools along with rigid and Ryobi. i have sent this link to my district manager and he said that he would pass it along to the quality assurance representative for Milwaukee. I hope they contact you and get this ball moving.

  • Pavel Paul
    Pavel Paul 20 дней назад

    8:00 the ceiling makes me suspicious. How many volunteers and aliens you've used until the software worked?

  • Adam Wilson
    Adam Wilson 20 дней назад +2

    This is what riving knives are used for. This stops the timber from pinching on the blade

  • TotallyOriginal
    TotallyOriginal 20 дней назад +1

    Of course his name is Chad.

    • stocchinet
      stocchinet 13 дней назад +1

      the virgin kickback sawblade VS the chad programmer

  • Stefan Tieber
    Stefan Tieber 20 дней назад

    Why not just use a saw, with the blade spinning in the other direction?

  • darkavenger10k
    darkavenger10k 21 день назад

    If you don't have the strength to stall the saw you are using before it kicks back then you shouldn't be using the saw.

  • Kevin Smith
    Kevin Smith 21 день назад

    It's a good idea but any company that adds it will also add an extra $200 to the price and no one will want to buy it because of the price.

  • NateLovesToTank
    NateLovesToTank 21 день назад

    You’ve also got me convinced to click the bell, what are you going to try and convince me to do next?

  • NateLovesToTank
    NateLovesToTank 21 день назад

    Fascinating

  • hj labs
    hj labs 21 день назад

    I didn't get smarter today ... LOL...

  • McKevin Dauntless
    McKevin Dauntless 21 день назад

    Circular saw is safe if the person who is using the saw is not dumb enough not to hold the saw properly. I've been using a circular saw for a long time since then i don't have any problem wiit.

  • Robinson Hogan
    Robinson Hogan 21 день назад

    I made Fusion Power work. So I invented it.

  • Ромарио МкЛеод
    Ромарио МкЛеод 21 день назад

    Dustin, Chad. Nice to see y'all!

  • MotoMania
    MotoMania 21 день назад

    Hilti got a similar thing. i think atleast. In my old work as a steel worker i used Hiltis circular saws and when cutting things it would kickback but stop right away.

  • Trey Cranson
    Trey Cranson 21 день назад

    who would thumbs down this video??? saw makers? trolls?

  • joe cormack
    joe cormack 21 день назад

    he made that incredibly complicated, all he had to do was make it so it would shut off after a jerk movement, you don’t make any sudden movements when making a cut

  • _V_I_V_I_D_F_O_X_ —3–
    _V_I_V_I_D_F_O_X_ —3– 21 день назад

    Just imagine how the wood feels

  • Dennis Wetzler
    Dennis Wetzler 21 день назад

    I like your ambition and using your engineering knowledge to over engineer cool stuff. But if the kickback is caused by the cut section of the wood clamping on the blade, Couldnt that be solved by adding say a blade width like stub protruding from the deck to prevent the wood from pinching the blade? My table saw has spmething like this behind the blade to keep the cut straight and prevent pinching of the blade.

    • Dennis Wetzler
      Dennis Wetzler 21 день назад

      Almost like a rutter on a boat.

  • Laimis B
    Laimis B 21 день назад

    07:59 top left ceiling... where did you hide the body?

  • Fsac
    Fsac 21 день назад

    +1 for Seveneves. Picked it up on a whim just to use my last credit on Audible, and it turned out to be one of the more enjoyable books I've listened to through their service. So much so that the very first thing I did upon resubscribing was to pick up another Stephenson book.

  • Marc LeBlanc
    Marc LeBlanc 21 день назад

    Of all the tools in my shop, the one that really scares me when I use it is my circular saw. You guys are on to something. Good luck moving forward. I hope to see this in a future saw.

  • Christoph Fischer
    Christoph Fischer 21 день назад

    This is super cool. It protects people from severe injuries.
    Or you could just wedge a little spacer in the gap.

  • Jonathan Kiser
    Jonathan Kiser 21 день назад

    Gonadular region 😭😂😂

  • Safir
    Safir 21 день назад +2

    Big bandage is gonna censor this

  • Z M
    Z M 21 день назад

    This will save lives. Great work!

  • Michael Kane
    Michael Kane 21 день назад

    It's really sad to see the number of negative comments toward this in the comments here. Safety devices are like any PPE. They don't take the responsibility for safety away from the user, but they can make tools dramatically safer to use. I'm not in the market for a circular saw right now, but if one comes out with this technology I will buy it TOMORROW. This has been forwarded to Milwaukee, the power tool company I use.

  • TheScooted
    TheScooted 21 день назад

    Guys - just attach some kind of a button on the saw which will turn it on when a saw touches the wood. When a saw kicks back - the button depresses. No need for human reaction or fancy technologies at all! I mean - why invent a pen that can write in space? Just take a pencil ))

  • Yotam S
    Yotam S 21 день назад

    Cute cat :)

  • Ricky Horsburgh
    Ricky Horsburgh 21 день назад

    I like the concept but i think it should be optional to have on or off in certain uses by professionals kick back is expected and grip pressure is increased but it still needs to be cut this would render the saw useless in those circumstances if it cant be overridden. Great for new users or homeowner's and a good back up for pros just needs an override incase

  • Philip Sparrow
    Philip Sparrow 21 день назад

    I think this is most relevant to chain saws, great idea but applied to the wrong device. keep it up guys. kick back kills.

  • JAMES! Since the 70's
    JAMES! Since the 70's 21 день назад

    We would need a huge Von Braun space station, or a few of them!

  • Brew Bear Brewer
    Brew Bear Brewer 22 дня назад

    So cool

  • K0ester
    K0ester 22 дня назад

    Worst kick back I've had was on a table saw. Piece of 1x6 kicked back and hit my shoulder. Went through a work jacket, sweatshirt and a t shirt, and gave me a good puncture would with the corner.

  • Michael Sliva
    Michael Sliva 22 дня назад

    Shouldn’t the cut be behind the saw on the handle side and they push it into the wood to simulate someone cutting away from themselves? Especially since it’s doing machine learning on a motion opposite of typical use.

  • Abram Porras
    Abram Porras 22 дня назад

    Is this what killed Johnny Cash's little brother?

  • LinusDev
    LinusDev 22 дня назад +17

    Thats some "cutting edge" technology

  • Nikita Dubrovskih
    Nikita Dubrovskih 22 дня назад +1

    You're doing it wrong, hold it better. Machine's motor will burn before your bones snap. No reaction required if you know that it kicks.

  • DeDraconis
    DeDraconis 22 дня назад

    So n00b question here.
    I'd be concerned about a computer put into a power tool like that. Same reason that I'd be concerned about the idea of a computer in a gun (e.g. so law enforcement can remotely safety them or something). Computer parts tend to be kind of delicate, and these are objects that are exposed to extreme forces just by being handled - most commonly, just being dropped/lugged around.
    If the issue with kickback is the the wood pinching together onto the blade, from the direction it's already been coming from.. wouldn't it be simpler and as effective to put a little triangle indent on the edge of the metal square guiding the blade that's the same width (or just a little bigger than) the saw blade, that recesses down into the cut you just made by maybe 1/32 of an inch, to act as a physical block keeping your board halves pried apart?
    This would be easier to say if I was holding a circular saw in my hands right now but that's the best I can say.

  • John K
    John K 22 дня назад

    Destin, once again you blow my mind. I lost a finger tip (thankfully) to a kick back. (i have photos of before and present day, astounding how much of my finger grew back on its own) The technology you and you're friend designed would be worth every penny, market it, and make you're life better. And i'll know you'll use that to make us Smarter Everyday! I love your show.