Coffee Maker: Pumping water with almost no moving parts

[@ericwWu]

Tech Connections brought me back to the memory lane. Miss you, Bill.

[@REDSHlFT]

Here watching this again, after many years, because of the Technology Connections video on coffee makers and his reference to this video!

[@GaiaCarney]

RedShift - me, too 🤗

[@David_Crayford]

Ditto.

[@RMJ1984]

This guy is like the teacher / dad i never had. If only all learning was done like this. Makes it way more interesting.

[@MicahTreptau]

Unlike most of my teachers, you make me want to learn more, great job!

[@aeop]

Micah T fun and interesting no wonder why

[@devonnewest7990]

Micah, me too!!

[@MohsinExperiments]

Pasting like there to keep 700 the same👍

[@TheMursk]

Okay students, this week's class will be 2 minutes because i spent all week making those 2 minutes entertaining. Don't @ me if you get problems with the homework, i'll be polishing next week''s whopping 3 minute class.

[@lwo7736]

You were probably a terrible student

[@AndyKong51]

Oh, that why the coffee maker has this bubbling sound. :>

[@tz4217]

5years ago

[@suicidsasquatch]

2days ago

[@OT3S]

8hours ago

[@awesomefirefist]

@@OT3S yeet

[@PixelBoyMiner]

@@awesomefirefist you aren't deserving of basic human rights

[@tylern6420]

This is surprisingly smart and effective Not only is it cheaper, but it also lets us put in water to use later instead of near-instant action that the first Mr Coffee machines had (probably as well as other early coffee makers trying to usher in a new era of coffee making) It removed the rush of puttinng in the coffee, turning it on, puttting water in and making sure the carafe? is below the outlet within like the 15 seconds itd take for the coffee to soak up and let through Also i came here from technology connections.

[@shaider1982]

Yup, same here. Hope Bill posts videos again.

[@tylern6420]

@@shaider1982 look out for march 2023

[@someonespadre]

The original commercial drip pots used gravity, heat water in reservoir, when light comes on pour cold water into reservoir, cold water sinks to bottom, hot water overflows into brew basket.

[@gyrgrls]

The principle is called "thermosiphon". At one time, it was even used in some automobiles, in lieu of a belt-driven water pump., to circulate the engine coolant.

[@Derek_Read]

I think this is different. What is actually moving the liquid here is heated water forming bubbles (vapour) inside the rest of the water, and as it rises it pushes the liquid water up. I don't think a thermosiphon uses a gas to move the liquid, it uses thermal convection. A bubble pump (aka gas lift pump) needs the one-way valve to function. As each bubble passes up through the liquid it pushes a little bit of that liquid up, but because it can pass through the liquid it is not capable of pushing it all out of the way, which is why the one-way valve is needed (so the little bit of water that is moved up with each bubble doesn't move back down). That's what gives this kind of pump its distinctive sound, which is created as the gas escapes.

[@EGGINFOOLS]

@@Derek_Read This is correct

[@fermitupoupon1754]

A gas lift pump only needs a one way valve if there is the possibility that the bubble can go the wrong way. You could replace that valve with a U-bend, provided you have the space to do so. The gas bubble can't go down and around the U-bend.

[@JTA1961]

Probably in France... 😃

[@webby2275]

@@fermitupoupon1754 the check valve is preventing the liquid from flowing the wrong way, not the gas.

[@tc104x]

Just a general comment: These are really well done and your voice compliments the narration. From one engineer to another…very good job in your presentations, short, simple, some humor all keeping the attention of which for most on here, is rather short. Kudo's.

[@kanjakan]

@Sock Cucka Ikr condescending

[@clenilma100]

This is my 2nd Keurig coffee maker of this model. kzbin.infoUgkxBrV-RbF5Nk0Rlt9i15aao-YMzqzTG8Vf The first worked fine for more than 2 years, and I could still get a decent cup of coffee out of it if I fiddled with it when I decided to replace it. The problem I had with my first unit was this: When attempting to brew a cup of coffee, the unit would either keep brewing until the coffee was undrinkable or it would not run long enough and the coffee produced was way too strong. I cleaned the unit as best I could but it did not help. So in the end it was just too much trouble to get a good cup of coffee out of it, so I decided to replace it with a new one, which has been working great since I unpacked it.

[@4623620]

Yeah, we miss you Bill ❗

[@Tuning_Spork]

Has anyone ever told you that you resemble Mark Hamill? I feel like I'm learning from a Jedi engineer!

[@Sir_Pleasant]

looks like mark hamill, but sounds like alec baldwin!

[@nyvoodoochild]

Malec Hamwin... I'll let myself out

[@TheAgentAssassin]

Malec Hamwin could be an SNL character who shows you how things are made , but the catch is he has no clue how things are made. When he's called out on it he goes into a rage until everyone calms him down agreeing to watch another demo.

[@Tuning_Spork]

"Malec Hamwin: 8th Century Engineer Guy". Get Lorne Michaels on the phone.

[@gc7439]

Ok, this is a stretch, but when I saw the thumbnail for this video I saw this person: i.gifer.com/RaE8.gif Lol... Not saying engineerguy actually looks like Jan Skylar... More likely I need glasses.

[@GamesFromSpace]

Has colored tape, definitely an engineer.

[@NoConsequenc3]

us chemists use them as well. Nice for labeling

[@sharpfang]

Red, so correct. Blue aka tactical tape, could indicate a military/paramilitary type.

[@hxhdfjifzirstc894]

Engineers simply cannot pass up colored tape. Like catnip.

[@hanchockelias5123]

I'm an electrician and also an engineer??? That's awesome

[@jeremyhillaryboob4248]

Has NES controller pfp, definitely a gamer

[@cthellis]

We miss you, Bill.

[@crapstirrer]

the 'busted' gaffe at the end was wonderful.

[@NotMe35971]

It was a bit too calm. Usually woman without coffee reacts differently.

[@pre-packaged_9692]

I feel it was likely based on reality lol

[@saablazer]

Again sent from Technology Connections. Can’t wait for your return!

[@marsgal42]

These videos remind me of an "are you a nerd?" quiz that went around the company a few years ago. One of the questions was "Have you ever bought something for the express purpose of taking it apart to see how it works?" Yes. :-)

[@drivestowork]

Some years ago I inherited a pistol... I was shocked at how simple it was when I took it apart! Went back together just as easily.

[@AbyssArcher]

We miss you Bill!

[@psirvent8]

Is he dead ?

[@AbyssArcher]

@@psirvent8 I sure hope not! I'm assuming he's just taking a break from KZbin :)

[@Barnacules]

Great ending! :D

[@LevisLabOfficial]

Barnacules in the wild!

[@sharifsircar]

Barnacules Nerdgasm You're here =D

[@ljmcobra0520]

The production quality on this video considering its 9 years old now is insane!

[@m0ther_bra1ned12]

"I'm...repairing it". XD

[@LiamTronix]

Same excuse used by the Grinch, when he was caught stealing a Christmas tree...

[@SoftulMic]

of course he must repair it... he replaced the plastic tube inside to show us how it works :)

[@Perktube1]

Only ten bucks. Get her a new one at Walmart.

[@kjyhh]

@@Perktube1 That's also under repairing.

[@florinpandele5205]

I did that too when I was taking apart my toys. I am an engineer because of that though ☺.

[@jameshoffman3318]

Engineers. Smart enough to show you how ANYTHING works. But not enough to remember TO PLUG THE COFFEE MAKER IN. I joke I joke, you're awesome.

[@diggerpete9334]

That just shows how candid this excellent man is and its adds a little comic relief.

[@MrCordycep]

You'd be surprised how many times I'd stood stumped at a problem only to find that I didn't plug something in, or I didn't plug it in all the way. :$

[@crimsonknight5575]

James Hoffman you make joke.

[@tomh2572]

crimson knight yes he make joke

[@GabrielTobing]

Yeah that was funny as!

[@LIMUSBEAN]

Please never stop doing these videos!

[@aomtr333]

I just stumbled upon your videos not two minutes ago and I'm already enamored. While I will confess that some of your explanations fly right over me, it doesn't discourage me from not being completely entranced and amazed while you explain things we pretty much take for granted every day. Keep it up!

[@xxwookey]

I've always wondered how these gurgling things actually worked. Nice to finally have an answer. And the simplicity is rather pleasing.

[@duanewente457]

Hahaha "Oh." I'm on a marathon of your videos. Someone showed me the injection molding one and I got instantly hooked.

[@cathyshepard253]

+Duane Wente My brother showed me the "How Microwaves work" episode, and now I'm in the same boat you're in. XD

[@michaelfixedsys7463]

his Aluminium Beverage can Video showed up in my recommended

[@JonatasAdoM]

Like with Tom Scott I had seen one of his videos before but the one that really brought me is the one where he was reading a book talking about how the air conditioner became common on houses. Then the one about how the drip coffee machine became popular got me hooked. It's one of those channels that you'll always know/recognize the host.

[@CombineWatermelon]

@@michaelfixedsys7463 me too

[@shwimmy11]

Woke up this morning and I finally decided to find the answer to this question. It has been at the back of my mind since I was like nine. Thanks for posting this fun short video

[@stonent]

I took apart a coffee maker as a kid and I remember the little ball falling out.

[@WilliamDye-willdye]

A few minutes ago I tore apart our old coffee maker, just to replicate the lessons in this video. There's another interesting aspect to coffee makers that I hope Bill can cover someday: bimetal thermostats. The one I found in the old coffee maker was the cylindrical kind, located on one of the power input lines to the heating element. At my job we use a different type of thermal switch as a safety mechanism in case a device overheats, but the bimetal principle is the same. Thanks again for making this video. It was fun to re-watch it, this time with a torn-up coffee machine in hand.

[@Wul-Lop]

Your videos inspire, inform & educates people around the world. Thank & many thanks from Thailand.

[@TheEgg185]

Thanks for recommending this to me 10 years later.

[@screenflicker1]

The one way valve is also called a check valve. As a chemical engineer working on the floor, i deal with them all the time but I had never ever thought they could be used as a pump. Wow.! Also learning recently a bit about "slug flow" usage in crystallization processes, I find equally fascinating. You can actually crystallize solids in a moving gas bubble in a tube and control particle size using slug flow.

[@Mouzekiller83]

it's short,straight forward and more informativ as most other youtube video's-I LOVE IT!

[@PJHLR]

The bubble pump does have one moving mechanical part: the check ball. A good example of a heat pump that does not have any moving mechanical parts would be a vacuum diffusion pump. That truly has no moving mechanical parts.

[@somerandomuser5155]

But How to.create the vacuum state

[@TheBakedpotato69]

i have learned more from this man in 30 minutes, then 4 years of high school science, thank you!

[@abhijitmahajan2007]

2019 anyone? I am amazed at the quality content left to ferment by youtube and brought to recommend after a number of years.

[@jacobchai6481]

2021 lol

[@foodlovingpig]

I love ALL of your videos. So many of us have always drifted through life, especially us younger ones, seeing all of these things just work, not caring WHY they work, but simply expecting them to when we turn on something as common as a coffee maker. Recently I've especially become extremely interested in not just the fact that a common coffee maker works, but how it works, and the ingenuity and pure genius it took for the person or persons who designed it to get it to work so well. Thanks!

[@shaider1982]

0:43. From a technology connections videos, this design is similar to earlier Mr. Coffee models.

[@YamiPoyo]

Watched this again due to technology connections loved the video about soda cans hope you come back to youtube

[@Nezfen]

Another amazing video. I'm more curious about the editing - did the team add a door knock noise because you looked to the right during shooting, or was it planned?

[@engineerguyvideo]

That was in the old days: it was added.

[@Nezfen]

ha. Smooth :)

[@4lligator]

To freak out those people watching these videos while high

[@David-pp9jw]

_Haha._

[@juliusfucik4011]

I can not praise you enough. Short. Simple. Clear. Great videos!

[@tihzho]

Excellent video, as always. You didn't mention percolators that predate coffee makers work on the same principle. :)

[@mred7375]

Just saying hi because no one has commented for about 3 years. I just discovered this guy a few months back. I like his dryness.

[@paulwharton1850]

Thank you - Always wanted to know how they worked.

[@jameslaidler4259]

I've had some good lecturers like you in the past. The world needs more of you guys. Top tip, if you use an electric kettle for making tea, boil a full kettle, pour it into the empty coffee maker, and the coffee produced will be of a significantly higher quality. I've done it for years. Much better than those sad little heating elements. You'll taste a difference.

[@Lun4812]

+James Laidler You mean pour it directly on the coffee?

[@jameslaidler4259]

No, pour the kettle's contents into the resovir. Boiling water is bad for ground coffee. Too hot. Pour the hot contents of the kettle into the resovir to go through the standard path for the hot water.

[@nikushim6665]

You should do a follow up on the engineering of planned obsolescence (the art of designing shit to break). Because a modern coffee pot is a really good example. In brands such as cuisinart the ball valve is intentionally placed in such as way its near impossible to access without destroying some aspect of the coffee pot, on top of lacking basic screens to prevent clogging over time.

[@tarkbayraktar9000]

It's real success to tell someone technical principles so simple and clear. Congrats, your videos are amazing.

[@Unknownboi88]

Such simple and effective design. Very elegant. Though I have not use one of those type coffee machines in over 7 years.

[@Sparky400]

so it works like and old pupper boat

[@johnfrancisdoe1563]

Philip Anderson The one I've used for years omits the heating of the coffee pot (it's a thermos), but keeps the traditional piping because it also provides a smaller total height.

[@EGGINFOOLS]

You look younger so this style coffee pot is probably most like that handle on the inside car door that goes around and around to move the window. Lol. I joke, I joke.

[@willfoley25]

This guy got me interested in how a coffeemaker works. I mean seriously. I'm thumbs upping every video from now on before I watch it, just so I don't forget after he blows my mind.

[@DEATHBYFLYINGCDS]

*designs a fantastic way to demonstrate the movement of the heated water....................forgets to plug it in* :P

[@heart0fthedrag0n]

just engineer stuff :D

[@toddkes5890]

I'd rather forget to plug it in, than find out the shocking way it was plugged in accidentally

[@alibadawi3398]

I honestly think that this is one of the best channels on KZbin. Bill, you actually educate people on the technical aspects of everyday life in the simplest of ways and as an engineering student (hopefully one day a legitimate engineer ((: ) I want to thank you for your amazing work. Keep it up!

[@edwardatnardellaca]

@engineerguy your coffee maker with an elevated reservoir would work without an additional heating element. You just need to route the water through the heating element and back below the reservoir, as long as the outlet is still below the reservoir the water will flow. I imagine the reasons your proposal of an elevated reservoir is not used have nothing to do with saving money on a pump or a heating element. Instead, a non elevated reservoir lowers the center of gravity of the machine. Also, the non elevated reservoir ensures that the water will not flow unless heated, an elevated reservoir coffee maker would need a valve to control when and how fast the water flows adding cost and complexity. Your video shows how the solution works but inaccurately presents the problem by implying that the water would not flow down through the heating element and back up to below the reservoir.

[@sailorsindhbaadh8130]

Is your proposal that the water after mixing with coffee beans/powder, should be sent back to the heating element at the top to keep it warm i.e the heating element performs dual functions, heating the pure water from the reservoir and also the coffee-water mix?

[@buddyclem7328]

While ingenious, your idea has one problem. Once the coffee is made, your supply of hot water will be exhausted.

[@emilemilian7404]

Your solution (based on the principle of communicating recipients) the speed with which the water runs will depend on gravity. You can vary the volume/time by selecting a differnt section to the tubing, but you can not vary the speed. So you need to have a powerfull enough heating element to heat the water very quickly. While in the solution presented in the video you can use any power for the heating element, liquid circulation will only start when the water is hot enough, only than will the pumping effect occur. So you have the guarantee the water is always hot enough to boil the coffee.

[@buddyclem7328]

@@emilemilian7404 Good point! I had not considered that at all.

[@ZachMeador]

this guy is one of the youtube OGs & is under-appreciated, imo.

[@jetttskiman]

How come you don't have a tv show on Discovery yet?

[@evilpandakillabzonattkoccu4879]

jetttskiman because he doesn't ice road truck or swap log or gold rush or fly wild Alaska or any of the other bizarre jobs people seem to be interested in. learning how the world around you works? ....what's that got to do with 'the discovery channel'? ....it's sad how horrible that channel got and that was years ago. to be frank about it, I don't have a TV anymore.

[@Starlite123]

AtomicRetard Wtf is a tv? Can i look up sans? Im only using my tv as a pc monitor. Can i look up "sans" on my tv? And what is a Smart "tv"? Do those have Google? Whats a "Smart tv" without coax??? Can you watch "tv" on that?

[@neurofiedyamato8763]

TV is dying because the stuff they put on is 90% bad. There's also lack of chocie of hwat to watch and when to watch. It's utility is also much more limited. The good thing about a TV is that it has better display capability than a monitor. Hook that up to a good computer with good graphics card and processing power, you have a very fine image. But you won't be using it as a traditional TV.

[@Colonel1954Dz]

Too educational for TV..

[@RaffaelloGiannelli]

Neurofied Yamato l

[@hume5ter]

I just watched about half of your videos and I find I have to force myself to stop and get going on things I have to do. Your videos are wonderful and you have a great sense of humor. I've learned a lot in the past couple of hours. Thanks!

[@oldcowbb]

tape, engineer confirmed

[@NoeArauz]

I have watched AND shown the aluminum can video maybe 100 times... but I never had seen this one. Came from Technology Connections on 8/11/22.

[@VitoVeccia]

"I'm repairing it". Haha. It wouldn't hurt to have a thermal fuse in hand when making such a comment. Funny part is, I think that's probably the only thing I've seen go bad in a coffee maker..... except for that one time I dropped mine on the floor.

[@amandeepsingh7542]

Mr.bill hammak you make very good , informative videos through which even a layman like me can understand complex engineering concept very easily thanks and keep making good videos ..

[@dougrogan379]

i really like this channel and he reminds me of Mark Hamill aka Luke Skywalker. I am gonna subscribe

[@d.k.1394]

may the force be with you son

[@pdc023]

I was going to comment that the title is misleading, but your statement at 1:17 "This simple device creates a pump with ALMOST no moving parts." corrects the record. The presence of the check valve is in fact a moving part. If the check valve ball was to get stuck on the seat, or stick in the open position, it would render the system inoperative.

[@willybilly99]

i always though there sure is two heating coil one for the pad and one for the boiler now i know thanks

[@SakariNy]

Better coffee machines do have two heating elements (like mocca master), because one heating element tends to heat too much and spoils the brewed coffee.

[@JonatasAdoM]

Best thing about the coffee machine is the almost hypnotic sound it makes.

[@Mike1614b]

How to fix anything: Step 1: Make sure it's plugged in.

[@JasonJBrunet]

Bill, I love you. You're the David Attenborough of everyday machines. And you look like Luke Skywalker. So far your channel is my favorite discovery of 2018.

[@drkjk]

"Repairing it." Good one.

[@csirkis777]

These videos make me happy which is really needed right now.

[@nathanbishop7816]

"Did you take the coffee maker again?" XD

[@JonasRosenven]

"Did you take the coffee maker again?" XD

[@TheShizzlemop]

@@JonasRosenven "Did you take the coffee maker again?" XD

[@JonasRosenven]

@@TheShizzlemop "Did you take the coffee maker again?" XD

[@UtkarshAmitabhSrivastava]

@@JonasRosenven "Did you take the coffee maker again?" XD

[@JonasRosenven]

@@UtkarshAmitabhSrivastava "Did you take the coffee maker again?" XD

[@lasarousi]

Holly cow ten years ago? Less than 3 minutes?! Absolutely interesting and informative!!?

[@RealationGames]

I wonder what Moccamaster does to prevent that horrible slopping noise. Every coffee maker I've yet seen except that one is horribly loud at the end of each run.

[@liquidthex]

RealationGames Well, without actually looking it up, the answer may be in this video.... This bubble pump function is designed to allow 1 heating element to do 2 jobs, to be more efficient and presumably cheaper to manufacture.. But if you didn't care about that you could just use 2 heating elements.. That should be much quieter, I would think.

[@RealationGames]

liquidthex They still do pump the water in Moccamaster, it's not gravity driven.

[@jerrymctee5996]

My parents and grandparent told me not to take anything apart again but I wanted to take mine apart and see... now I don't have to. thanks Bill.

[@the_original_Bilb_Ono]

i want some coffee now.

[@calebcourteau]

I've always wondered how my coffee maker works. In fact, every time I hear it percolate despite any noise from mechanical bits I knew there was some basic physics principle at work that I was ignorant of. Thanks for clarifying this!

[@MarioDragon]

"almost no moving parts" derp

[@rabidkittenapocalypse7398]

Check valves get no love.

[@NeutralGenericUser]

yes, that is the definition of “almost”, thanks

[@Keys879]

Well technically the ball in the check valve isn't actuated but relies on pressure differences. So.... i would give the description an A-OK.

[@geosutube]

Great teacher. A lot like my dad. He showed me so much when I was a little guy, showed all of us, in fact. Engineer, too. Caltech.

[@vk45de54]

the valve sort've moves...

[@ElNeroDiablo]

Technically: yes it does move. However, when things are described as "little-to-no moving parts" they're referring to not having things like electro-mechanical pumps that push the fluid through instead of letting physics do the work with a simple check valve.

[@cakeman58]

ElNeroDiablo except this was literally described and titled as having no moving parts, which is false.

[@JoostMehrtens]

cakeman58 Yep so does the on/off button and thinking of it even the coffee pot moves. But that is not what engineers mean with moving parts. Technically 0.9999 is not 1 but for an engineer....

[@MinecraftEpicPlayer]

Electrons move in wire which we call electricity - literally, electricity is the energy in the movement of electronics Everything has moving parts or it doesn't do anything

[@awhodothey]

MinecraftEpicPlayer An electron isn't a 'part' anymore than an atom is. Sure it's a "part of the process," but that is not what the word 'part' means in this context- or the phrase "no moving parts" would be utterly meaningless. The abstract definition of 'part' shares the same word in English but is actually a completely different concept. A valve is a moving 'part' in your coffee maker; an electron is not. The title is technically a lie.

[@believein1]

Thank you, Bill. You're the Science teacher I always wanted.

[@Groaznic]

Yeah this is relying on gravity so it will work poorly on Mars. HOW WILL WE MAKE PERFECT COFFEE ON MARS!!!!

[@Groaznic]

Jackie Scholl Sure, it will just take 3 times longer to make it.

[@LazyScoutJace]

I've watched this video 10 times a day and it still feel just as fresh

[@jmiquelmb]

They're nice machines if you don't consider coffee quality. Italian engineers made their machines with taste in mind. This only cares about price and convenience

[@leogarciabooks]

This is so cool. I never knew how that darn contraption (the coffee machine) worked. Thank you.

[@GamebossUKB]

Actually all the parts were moving on the molecular level

[@StefanReich]

Smartass award!

[@FightingSheep1]

Tomorrow morning's cup of coffee ☕ will taste extra good knowing the amazing physics of this marvelous machine, Thank You!

[@apocalypticentity7012]

I know this is an old video, but it is people like you who made me want to study engineering. Just about to complete my Master's degree. Love your videos, they're always informative and well done. Regards, an (almost) engineer.

[@j12997967]

Loved the bit at the end.

[@Citinited]

I imagine another benefit of using a tube like this is that you only need to heat the water you use instead of the entire reservoir. Good video!

[@Vid_Master]

Yea I never thought about why it makes the bubbling sound, thanks mr. engineer guy!

[@AirWindStorm]

How come this VDO has inly 1.2 million views after 12 years?!? This is excellent!

[@philipberthiaume2314]

what impresses me is how he modifies the machine with work arounds. engineers are fearless when it comes to breaking something down and adding custom add ons and making it still function.

[@nicomulfetti8355]

Awesome videos! Thanks Bill Hammack and Crew

[@BlackJavaBean]

Your videos are great! This is a great example of design decisions that engineers have to make.

[@kalchas]

You make some great videos, excellent presentation of the material. I have to say, as a student in physics and mathematics, I got a chuckle from the forgetting to plug in the coffee maker. Simply because I have had many projects and experiments where after spending hours setting everything up correctly, I'd have a moment of panic at it not working when I turned it on, then realize I hadn't plugged in any power yet. Keep the great work coming, please. :-)

[@MrScorpianwarrior]

I assume you are no longer a student, how's your life going?

[@goldenpun5592]

it's funny because I was recently pondering how coffee makers worked. I had a feeling it had something to do with the expansion of hot water but didn't know about the mechanism. cool beans

[@Cruth8987]

I'm an engineering student and I love your videos !

[@corradocarta]

I just gave this video a well-deserved 4000th "like". As usual for this channel, an impeccable job: well written and well spoken presentation - thanks!

[@youngseanconnery8577]

i love how all of these videos in this channel are like, " i totally was just asking the other day how this thing works! here it is explained!".

[@Sumtoshi]

Love your channel. Feel hope again for our kids

[@nochnoy13]

Thank you for making these. I'd love to see these on PBS as some sort of short. ~Fellow Engineering & Coffee Lover

[@bettyschneider5268]

Cool 😎 video📼🎥 i thought all coffee machine makers had a pump or motor? ☕☕☕☕☕ Thanks! 🤓☕

[@KKVinayKumar]

Wow! this is the first video i've seen where it has zero dislikes. Keep up the good work Bill.

[@RDCST]

Finally I know how this kind of coffee maker works, thanks.