Slow Motion - How an Impact Wrench Works

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  • @PatrickCoble
    @PatrickCoble 7 ปีที่แล้ว +5

    1st class example of how to be a great TH-camr!
    -straight to the point
    -good audio
    -good lighting
    -interesting
    -informative
    thanks!!!

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว

      +Patrick Coble Glad you liked it. I have more to come and I have had some practice.

    • @mr.actiongal1017
      @mr.actiongal1017 7 ปีที่แล้ว

      Nick Moore where did you buy this?

  • @markzaikov456
    @markzaikov456 5 ปีที่แล้ว +159

    Straight to the point and no annoying music! Awesome!

  • @ardonjr
    @ardonjr 3 ปีที่แล้ว +29

    Nearly 10 years later I got this recommended by TH-cam.. and I loved it! Good job!

  • @martyisabeliever
    @martyisabeliever 7 ปีที่แล้ว +339

    I can sleep at last...4 years I've been a wonderin' how that f'n impact works???

    • @sMASHsound
      @sMASHsound 3 ปีที่แล้ว +1

      i am a lot older than u, this question was a lot longer for me lol

    • @anywaystohighway
      @anywaystohighway 3 ปีที่แล้ว +1

      boy you must have been stupid, back then it was even easier to find shit on youtube than it is now....

    • @moonlighter2809
      @moonlighter2809 3 ปีที่แล้ว

      Same here,

    • @Kurtis4hyr
      @Kurtis4hyr 3 ปีที่แล้ว

      One of the smartest guys I know didn't know how these work...Now I can clue him in!

    • @deedewald1707
      @deedewald1707 3 ปีที่แล้ว +1

      Seems Seeing Is Believing !

  • @MrDhandley
    @MrDhandley 8 ปีที่แล้ว +424

    Absolutely brilliant. The best demonstration and explanation of how an impact driver works. Many thanks.

    • @burhjyu
      @burhjyu 4 ปีที่แล้ว

      bro 3 I've been using for 5 months I've never seen a shortage of products and the seller is very successful By Amazon :amzn.to/37OAfuC

    • @siswanthoabdullah8308
      @siswanthoabdullah8308 ปีที่แล้ว

      Dimana kalo beli alat ini ya

  • @MySpace662
    @MySpace662 9 ปีที่แล้ว +203

    What an impact this video creates.
    It hammers out every little detail about this engineering marvel.

    • @ntsigns2700
      @ntsigns2700 8 ปีที่แล้ว +25

      My Space it is quite riveting, I was bolted to the screen!

    • @3dChris
      @3dChris 8 ปีที่แล้ว +5

      My Space, go back to the far dark corner of the interweb! You can't win people back with power tool puns. People aren't going to leave Facebook. Just accept that and stop trying so hard. It's sad really.

    • @AllForTheGame
      @AllForTheGame 8 ปีที่แล้ว +2

      +My Space go back to reddit

    • @tojiroh
      @tojiroh 8 ปีที่แล้ว +6

      +My Space Yeah, it really drives home how much power tools have helped the modern man wrench control from his surroundings.

    • @3dChris
      @3dChris 8 ปีที่แล้ว +1

      tojiroh, don't encourage MySpace.

  • @MudRFunR
    @MudRFunR 7 ปีที่แล้ว +151

    That's awesome! You cut it up so we can see it without animation or a boring detailed verbal explanation. I subscribed!

  • @kthwkr
    @kthwkr 3 ปีที่แล้ว +10

    That was exactly what I was hunting for. That cutaway was perfect. I kinda imagined in my head that's how it worked and you have confirmed. Thanks.

  • @liquidrelaxation9075
    @liquidrelaxation9075 7 ปีที่แล้ว +477

    "M'craftsman" *tips welding hood*

  • @camillof17
    @camillof17 3 ปีที่แล้ว +3

    Hands down the best explanation of how an impact driver works. This was my 4th and last video!! I get it now!!! Thank you

  • @ob707
    @ob707 3 ปีที่แล้ว +2

    Simple, but very thorough explanation. Great video

  • @fredchevalier2333
    @fredchevalier2333 2 ปีที่แล้ว +7

    Dude, I love tools, especially my impact drivers and wrenches, but have never fully understood exactly how they work until I watched this video. THANK YOU! liked and subbed

    • @NickMoore
      @NickMoore  2 ปีที่แล้ว

      Glad you liked it, I don't post that often but I try to keep it interesting.

  • @superglue46
    @superglue46 8 ปีที่แล้ว +24

    One of the best "how it works" videos I've seen. Thanks for making it!!

  • @jolio81
    @jolio81 3 ปีที่แล้ว +14

    That's awesome. The mechanism is so simple and elegant. Thanks for doing this demo!

  • @QuintinvanRooyen1
    @QuintinvanRooyen1 3 ปีที่แล้ว

    A video from 2012 answering a question I had since forever. Thanks Nick. Appreciate it!

    • @NickMoore
      @NickMoore  3 ปีที่แล้ว

      No problem, glad you liked it!

  • @sovietelectioncollidingtro6231
    @sovietelectioncollidingtro6231 5 ปีที่แล้ว +16

    I find it impressive that the materials can withstand those forces and hits over long periods of time. One would think the surfaces get destroyed in no time.

    • @benjaminlagace7266
      @benjaminlagace7266 3 ปีที่แล้ว

      Requires a tough material for the hammer portion!

    • @jamesbizs
      @jamesbizs 3 ปีที่แล้ว

      @@benjaminlagace7266 for the low low price or $2 for the finished product lol

    • @landarful
      @landarful 2 ปีที่แล้ว

      Take 20MnCr5, harden it to 58-62 HRC it will easily withstand it for a long time

    • @theewelder
      @theewelder 2 ปีที่แล้ว

      hardened steel...

  • @danjbundrick
    @danjbundrick 7 ปีที่แล้ว +42

    Answers to questions I didn't even know I had. This was very interesting. Humans make amazing things.

    • @numberpirate
      @numberpirate 3 ปีที่แล้ว

      Vs what?? Gerbils? Blue Footed Boobies?

  • @H.pylori
    @H.pylori 5 ปีที่แล้ว +3

    The best demonstration that I have seen on youtube. Now, finally I understand the impact mechanism. Thumbs up!!

  • @AndersonsethSMA
    @AndersonsethSMA 2 ปีที่แล้ว +1

    Cross sectioned impact wrench adapter....this guy's out here doing the lords work

    • @NickMoore
      @NickMoore  2 ปีที่แล้ว

      I see a think and I need to know how it works.

  • @sean-xs7rr
    @sean-xs7rr 10 หลายเดือนก่อน +1

    I've watched many videos to understand how this works. This is the only video that made me understand exactly how it works. Thank you!

  • @user-zz8ln3uh5x
    @user-zz8ln3uh5x 8 ปีที่แล้ว +57

    I will never again discount someone just for wearing that style of hat. Good video. Thanks.

    • @NickMoore
      @NickMoore  8 ปีที่แล้ว +4

      +Pedarski Glad you liked it, I'm still surprised that no one else has a video about this.

    • @user-zz8ln3uh5x
      @user-zz8ln3uh5x 8 ปีที่แล้ว +1

      I should do a better job of spotting such lapses in popular understanding... and do something about it. Thanks again.

    • @muchdisiudy1929
      @muchdisiudy1929 2 ปีที่แล้ว

      Saya ingin punya itu 😁

  • @ScoutCrafter
    @ScoutCrafter 7 ปีที่แล้ว +15

    Seriously outstanding video! 😃👍. Thanks for sharing!

  • @DeDafffid
    @DeDafffid 6 ปีที่แล้ว

    It's the first time I understood how an impact wrench works. Thanks a Lot. Brilliant.

    • @NickMoore
      @NickMoore  6 ปีที่แล้ว

      Glad it was helpful. Most electric guns use this mechanism but pneumatic guns work on a slightly different principal.

  • @dantekania7212
    @dantekania7212 2 ปีที่แล้ว +1

    A textbook definition of how every informative/educational video should be. Kudos to you and thanks

  • @TheFlacker99
    @TheFlacker99 7 ปีที่แล้ว +7

    A very well made video! Thanks for showing this on TH-cam.

  • @iant720
    @iant720 7 ปีที่แล้ว +13

    Awesome video! Use it almost daily, always wondered how it works!

  • @coloradostrong
    @coloradostrong 5 ปีที่แล้ว

    This is a 'not' video : not clickbait , not filled with stupid music / noise , not boring. Always great to learn something. Thanks ! Seems as though you could sell hats on the side from all the comments about yours . .....

  • @parkerd619
    @parkerd619 3 ปีที่แล้ว +1

    Thank you for making this video. I really didn't want to take my dewalt air gun apart just to find out how it works.

  • @kens97sto171
    @kens97sto171 7 ปีที่แล้ว +10

    Great Video. You explained how it works very early, and good narration and editing.
    thx

  • @RicTester
    @RicTester 8 ปีที่แล้ว +11

    Excellent tutorial. Loved the visuals. Well thought out and presented. Thanks!

    • @NickMoore
      @NickMoore  8 ปีที่แล้ว +1

      +Ric Tester Glad you liked, thanks for watching.

  • @anolisporcatus
    @anolisporcatus 2 ปีที่แล้ว +2

    I am looking everywhere on the internet for the drill adapter that you show here, I can't sleep anymore until i find it.

  • @radiumking3036
    @radiumking3036 5 ปีที่แล้ว

    Why can't all TH-cam videos be like this? This was so concisely done, you can tell this is a no BS guy who gets work done. He should teach shop classes in schools, kids would learn a lot.

  • @macdietz
    @macdietz 7 ปีที่แล้ว +4

    thank you for doing this!! ive wanted to see exactly this, an impact wrench in slow motion with a cutaway revealing the mechanism. +1 to you, sir

  • @isacchris1
    @isacchris1 7 ปีที่แล้ว +25

    That's cool I always wondered how an impact gun works.

  • @greatnortherntroll6841
    @greatnortherntroll6841 6 ปีที่แล้ว

    I've owned/used impact guns for decades, but never really understood how they worked. Thanks to that cool cut-away you made, it's finally clear. You've destroyed one of life's little mysteries! Lol

  • @NJerseyDan
    @NJerseyDan 6 ปีที่แล้ว +1

    Great cutaways man ! I've always had a good idea of how an impact gun worked. But watching the mechanism working was just awesome !

  • @bacard1002
    @bacard1002 3 ปีที่แล้ว +3

    Great video. You explained it better than I could imagine. Thanks!

  • @coastaku1954
    @coastaku1954 3 ปีที่แล้ว +8

    Wow, thank you, this was an incredibly good video, only took me 8 years to find it~

  • @ericx4124
    @ericx4124 3 ปีที่แล้ว +1

    Brilliant with the cutaway! Thanks!

  • @Director-M
    @Director-M 4 ปีที่แล้ว +2

    Amazingly done, chap! I learned so much about this tech in just 4 minutes. Cheers, Nick!

  • @sirobb
    @sirobb 9 ปีที่แล้ว +74

    Such an excellent video and explanation.
    Thank you for taking the time and effort to do it and you now have another subscriber.

    • @NickMoore
      @NickMoore  9 ปีที่แล้ว

      Thanks, I try to have new stuff up as often as possible.

  • @blackericdenice
    @blackericdenice 9 ปีที่แล้ว +4

    Dude, this is the best video I've seen this year. Thanks.

  • @cjjuszczak
    @cjjuszczak 7 ปีที่แล้ว

    Great use of a modern tool such as high-speed recording, together with practical cut-away, to show exactly what's happening.
    Thanks for the excellent and concise demonstration :)

  • @joekirklin
    @joekirklin 3 ปีที่แล้ว +1

    Love it. Nice straight forward video with a clear explanation. Thanks

  • @shawnp8429
    @shawnp8429 7 ปีที่แล้ว +3

    I only found very few vids on here worth watching .this was a good vid,make more please. .keep them straight for straight forward straight to the point like you did here....nice!

  • @uTubed007
    @uTubed007 8 ปีที่แล้ว +4

    Great video, thank you for taking the time in producing this.

    • @NickMoore
      @NickMoore  8 ปีที่แล้ว

      No problem, glad you liked it.

  • @scottishjimmy9813
    @scottishjimmy9813 6 ปีที่แล้ว

    Probably the best explanation I have seen for how it all works- especially like how you have shown the interior of the mechanism and slowed it down.

  • @lawrenceakers2990
    @lawrenceakers2990 7 ปีที่แล้ว

    This is a very informative video. I appreciate the sacrifice you made
    to your tools and the time you spent to make this video.

  • @Kataxu
    @Kataxu 7 ปีที่แล้ว +10

    Good video, I always wondered how these worked!

  • @ken2dal
    @ken2dal 7 ปีที่แล้ว +286

    Cool video but I have no idea how I ended up here. I started off by watching Jeremy Kyle and now I've built a shed in my living room.... Thanks youtube!

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว +16

      It's funny you mention that. TH-cam has done a bit of a shuffle and is directing a lot of traffic away from big names and towards small channels. Many people subscribe to big channels but rarely watch them all so giving the viewer more diversity means more views for TH-cam.

    • @NsKrewtable
      @NsKrewtable 7 ปีที่แล้ว +3

      How's it feel going viral!?

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว +31

      Analytics tells me that people have watched 158 days worth of this video in 24 hours. The comments tells me I should loose the hat.

    • @JohnSmith-mk8hz
      @JohnSmith-mk8hz 7 ปีที่แล้ว +1

      Chaos theory in action.

    • @NsKrewtable
      @NsKrewtable 7 ปีที่แล้ว +12

      If you like the hat, keep the hat. Fuck the comments.

  • @owenllewellyn1428
    @owenllewellyn1428 5 ปีที่แล้ว +1

    Amazing thank you for that beautiful demonstration of how an impact wrench or driver works.

  • @soylentgreen2065
    @soylentgreen2065 5 ปีที่แล้ว +1

    Very interesting. I bought an impact drill a few weeks ago and man is it a super help on rusted bolts. Thanks for posting.

  • @oherroprease207
    @oherroprease207 8 ปีที่แล้ว +14

    Thanks for the video Fedora Man!

  • @plavins1
    @plavins1 9 ปีที่แล้ว +4

    This is a really good video! Thanks for taking the time to make it!

    • @NickMoore
      @NickMoore  9 ปีที่แล้ว

      No problem, I'm glad you liked it.

  • @dpratt2000
    @dpratt2000 6 ปีที่แล้ว

    Thanks Nick. Great job on the demo. Thanks for cutting up that bit for us to see inside. Very cool.

  • @theoriginalcraig
    @theoriginalcraig 2 ปีที่แล้ว +1

    I cannot come up with a sufficiently enthusiastic enough compliment to give you. So many people do ridiculous computer animations which really don't get the point across. Your video, from concept to execution, is so much better and more informative than all the rest combined. Thank you so much for making this. You ROCK.
    BTW, that adapter is the best 2 dollars that you'll ever spend on tools! I want one of those! I don't even need one, and I still want one!
    Cheers, sir. You stand alone at the top regarding this topic.

  • @hideyourkidshidewife
    @hideyourkidshidewife 10 ปีที่แล้ว +7

    Nice job, I enjoyed the way you talked.

  • @nlo114
    @nlo114 7 ปีที่แล้ว +7

    Cheers, I learn something new every day :-)

  • @nickthompson3432
    @nickthompson3432 3 ปีที่แล้ว

    This video is perfect. Explained several things about an impact that I always wondered about even though I've had these apart multiple times.

  • @panhandlepilot9363
    @panhandlepilot9363 3 ปีที่แล้ว

    I appreciate you taking the time to show me how this works.

  • @larrylentini5688
    @larrylentini5688 7 ปีที่แล้ว +8

    Thanks for the video, very informative

  • @VinnyXL420
    @VinnyXL420 7 ปีที่แล้ว +3

    Great video! Great content! I hope you grow and make more cool stuff like this.

  • @neilstevenson7518
    @neilstevenson7518 2 ปีที่แล้ว +1

    This is one of the coolest videos I've ever seen

  • @addisonsteiner6473
    @addisonsteiner6473 5 ปีที่แล้ว +1

    Dude, you did an EXCELLENT JOB showing and explaining how this works...Thanks!

    • @NickMoore
      @NickMoore  5 ปีที่แล้ว

      Glad you liked it! This is my most popular video despite the hat.

  • @grantkendrick277
    @grantkendrick277 3 ปีที่แล้ว +6

    I didn’t know I wanted to learn this. Thanks

  • @Dingbat217
    @Dingbat217 7 ปีที่แล้ว +4

    Nicely explained, well done! :-)

  • @richardhogg9389
    @richardhogg9389 3 ปีที่แล้ว

    Terrific video! Really like how you no only explained it, but then provided the cutout of the tool so that we can see it actually operate.

  • @garrettgiuffre7298
    @garrettgiuffre7298 3 ปีที่แล้ว +1

    cool video that you for sharing the cutaway ! never seen it in action before

  • @MichiganHiker
    @MichiganHiker 7 ปีที่แล้ว +3

    Very cool, I always wondered how it worked.

  • @xspitefire101x
    @xspitefire101x 7 ปีที่แล้ว +3

    thanks, always wondered how exactly they worked.

  • @sorel93
    @sorel93 7 ปีที่แล้ว +1

    Nice. It's cool to finally see how one of your daily tools actually work.

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว

      +sorel93 Glad you liked it. I had been wondering for years before I made this video.

  • @aguswidi9316
    @aguswidi9316 3 ปีที่แล้ว +1

    This is the best video explaining impact driver

  • @transcript
    @transcript 8 ปีที่แล้ว +5

    Great video. Concise, informative, straight to the point. Learned exactly what I was curious about. I just feel like I should apologize for that hat or something.

  • @garyhoffmann1615
    @garyhoffmann1615 3 ปีที่แล้ว +5

    Thank you for the video, know how the hell did youtube know I was wondering how these things work and I was going to search for it, but I never did the search!!!

  • @Joe_Blo
    @Joe_Blo 3 ปีที่แล้ว

    8 years later, still a great video.

  • @giovannivasconcellos2390
    @giovannivasconcellos2390 3 ปีที่แล้ว

    I was wondering for some time how these tools work , and by far your explanations were the best a could found on youtube !

  • @TractorsChemer
    @TractorsChemer 5 ปีที่แล้ว +35

    Nice.

  • @ratoneJR
    @ratoneJR 9 ปีที่แล้ว +3

    Wow, Good job Dude

  • @FF.-tv
    @FF.-tv 7 ปีที่แล้ว

    the best explanation about impact wrench that i ever watch

  • @toomuchtruth
    @toomuchtruth 5 ปีที่แล้ว

    Awesome vid! That adapter is cool af. Wish they were still selling them. One of the most impressive tool addons I've even seen, just ingenious.

  • @tonapaitech2429
    @tonapaitech2429 8 ปีที่แล้ว +14

    Great vid!

    • @NickMoore
      @NickMoore  8 ปีที่แล้ว +2

      Glad you liked it

  • @joshs6405
    @joshs6405 7 ปีที่แล้ว +4

    Wow, that's pretty cool. Great video and explanations!

  • @samaanalkhaldi2364
    @samaanalkhaldi2364 4 ปีที่แล้ว +2

    Perfect demonstration 👌. Thanks.

  • @commiezombie2477
    @commiezombie2477 2 ปีที่แล้ว

    You did a really great job explaining this with the cut-away. Great work buddy! Thanks!!!

  • @DurzoBlunts
    @DurzoBlunts 7 ปีที่แล้ว +6

    Quality video i like it!

  • @vallejokid1968
    @vallejokid1968 7 ปีที่แล้ว +5

    Thanks for the breakdown. Now I know.

  • @vicentereyesrivera1429
    @vicentereyesrivera1429 3 ปีที่แล้ว +1

    Man, what a wonderful video. I love impact guns and ur video simplifies my understanding. Congrats 👌

  • @JodianGaming
    @JodianGaming 7 ปีที่แล้ว

    Great video! The cutaway was exceptionally good, showed a lot of detail.

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว

      +Gaming With ViperZeroOne Thanks!

  • @davida1hiwaaynet
    @davida1hiwaaynet 7 ปีที่แล้ว +3

    Interesting; thanks for sharing this. I believe the air powered units have a different impact clutch mechanism than this - I would be interested to see how that one works. I've disassembled the air powered ones for cleaning and repairs, and there is no spring in them. I guess inertia plays a role in timing the impacts.

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว +6

      Yeah, they have a throw-out hammer mechanism that is way different from this. I have an air gun in the closet waiting to be taken apart but my new slow mo camera doesn't arrive until March.

  • @kendelion
    @kendelion 9 ปีที่แล้ว +4

    wooow i always wondered how this works coz i use this 8hrs a day! :D

    • @NickMoore
      @NickMoore  9 ปีที่แล้ว +5

      I'm glad you liked it, I wasn't sure how they worked until I made this video.

  • @702xRyder
    @702xRyder 4 ปีที่แล้ว

    Best explanation video on the internet about how they work

  • @Iheartdgd
    @Iheartdgd 5 ปีที่แล้ว

    Thanks for putting this together Nick!

  • @judgeomega
    @judgeomega 7 ปีที่แล้ว +434

    But how is the rotational energy converted to lift the hammer in that first 1/4 ?

    •  7 ปีที่แล้ว +97

      judgeomega - the driveshaft has a partial spiral that engages the hammer at 1/2 turns (it's explained in the video)

    • @moeriou8431
      @moeriou8431 7 ปีที่แล้ว +115

      judgeomega when one end of a spring turns but the other doesn't, the spring compresses.

    • @mdw159
      @mdw159 7 ปีที่แล้ว +52

      easy question.... if you rotate the end of the spring while holding it stand still on the other end,,, spring will get shorter in length.. ;-)

    • @gw819
      @gw819 7 ปีที่แล้ว +37

      In one direction, yes. In the other direction, the spring will get longer. This is not how it is being done. See the first reply. There is a partial spiral that engages the hammer at 1/2 turns.

    • @ericscherbarth1817
      @ericscherbarth1817 7 ปีที่แล้ว +30

      The spring is not rigidly connected to any of the components, it only compresses to store energy and release to push the hammer. The movement of the hammer up and it's rotation back down is guided by a set of grooves between the hammer and transmission output.
      If you can get the impact mechanism out and compress the spring completely, it should be possible to dismantle the whole thing and see the grooves.

  • @reginald56000
    @reginald56000 7 ปีที่แล้ว +149

    You look like a very nice guy..

    • @WoWdropzone
      @WoWdropzone 7 ปีที่แล้ว +19

      Of course he's nice, he's Canadian. :D

    • @Snusen89
      @Snusen89 7 ปีที่แล้ว +8

      He looks so damn awkward in what hes doing :S

    • @TheMidnightNarwhal
      @TheMidnightNarwhal 7 ปีที่แล้ว +34

      YOU GUYS DON'T GET THE OG COMMENT HE LOOKS AND ACTS LIKE A TYPICAL MLADY NICE GUY LMAO

    • @AnimatedHugh
      @AnimatedHugh 5 ปีที่แล้ว

      Lmfao

    • @toomuchtruth
      @toomuchtruth 5 ปีที่แล้ว +44

      Is this like internet bullying? He's a smart guy producing good stuff. You guys can fuck off.

  • @djlennondbm
    @djlennondbm 7 ปีที่แล้ว +1

    Great video man. It's been driving me crazy to know how impact drills worked. You did a great presentation.

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว

      +Sr Rs Thanks, glad it was helpful!

  • @incognitq9985
    @incognitq9985 2 ปีที่แล้ว +2

    Subscribed, voted up, commented just because wanted to appreciate the good job uve done Nick! the way videos on youtube should be!

    • @NickMoore
      @NickMoore  2 ปีที่แล้ว +1

      Thanks! I try not to put a lot of filler in and just stick to the info.

  •  7 ปีที่แล้ว +6

    liked the video, liked the explanation and the slow motion footage. Thanks for sharing!
    I have just one question:
    Why wear a hat indoors?

    • @NickMoore
      @NickMoore  7 ปีที่แล้ว +4

      It's cold in Canada.

    • @NOOOOOOO0OOOOO
      @NOOOOOOO0OOOOO 7 ปีที่แล้ว +1

      +Nick Moore This is the first video of yours I've seen. I subscribe just because of the Trilby.

  • @joshdenham8404
    @joshdenham8404 7 ปีที่แล้ว +7

    Billy Bob!! Gimme my bolt whackin gun!

  • @teeveemukaimukal982
    @teeveemukaimukal982 7 ปีที่แล้ว

    Thanks for posting this informative video - great job on showing the internal functioning!