Inside a Guinness surger unit.

[@mikeselectricstuff]

Not sure we should still be calling line frequency transformer PSUs "conventional" any more...

[@paulsengupta971]

When you're talking about aeroplanes, "conventional gear" is used to denote a tailwheel aeroplane, even though the norm has been nosewheel aeroplanes since the 1960s.

[@bigclivedotcom]

I'm just showing my age. Perhaps I should use the word "dependable" instead. Since that brick is going to outlast many modern switchmode units.

[@cebruthius]

Wasn't the word "traditional"?

[@stinkycheese804]

True it is a vague word, though for a while some precision equipment used line frequency transformers with a linear regulator after it, so I prefer to use terms like unregulated, linear regulated (still having line freq trans.), or switcher/switch mode regulated... and yeah, those old unregulated PSU practically last forever so long as you don't exceed their current rating and blow the in-transformer thermal fuse. Once in a great while I"ll find one with a diode blown out, probably surge damage, but otherwise I have several that must be over 30 y/o. These days I keep the ones with screw-together cases so I'm not cracking welded seams with a vice when I want to build more into one.

[@andljoy]

I prefer to call them , not cheap Chinese crap :P

[@jesustheangryatheist]

Every now and again it's good to take a 20 minute break on the shitter to watch a Scottish bloke take apart electronics

[@bigclivedotcom]

Glad to help you squeeze one out.

[@matthew3p]

Glad to be Scottish

[@discomfortzone]

Hahaha that’s so funny as I am on the loo and this video came up so am watching lol

[@airindiana]

I was on the crapper yesterday at the airport. The bloke in the next bog had a vile explosion that sounded like the wet noise cows make, following which his phone rang he put it on speaker (loud) and proceeded to chat to his mate. I mean on what planet do you put your mate on speaker in a public bog whilst having a turd? He said to his mate “I’m just boarding the plane”. I called from my stall “if you are, you’re at the wrong gate mate as you’re actually sitting on the toilet”. Silence...

[@anononomous]

I reckon one day you're going to open an innocuous gadget and find a covert sim card and mic.

[@volvo09]

anononomous when I was a kid I took apart my rc car that I had sent in for warranty repair at radio shack a few weeks earlier. stuffed inside the main body with the pcb was some sort of a 2 or 3 page "achieve happiness with Jesus" pamphlet. it creeped me out, and I was pissed that it was smashed in there for all that time limiting cooling.

[@MalcolmCampbell]

You should have tried putting the leaflet in other broken gadgets to see if it fixed them.

[@k9sidrat662]

only if he get's an amazon echo!

[@maicod]

+Mal Divine repairing

[@Ryan-9000]

haha xD

[@cyancoyote7366]

I'm a simple man. If I see a new video from Clive, I click it.

[@petepeterpeoplesinternetradio]

me 2 and I click like even before I watch it have never seen a bad video from Clive

[@ahettinger525]

me too, and i've yet to be disappointed!

[@KingOfKYA]

Even the music, about the pink usb charger:P

[@choknuti]

I am even simpler. I see the word Guinness and I click on like :)

[@tallman11282]

I'm also a simple man, I see a new video from Clive I click it and I click the like button before the ad ends.

[@eastcoasteric]

Well Damn Clive...I haven't looked at your sub count in ages, in fact, it was probably when I first subscribed and you had under 10k subs. Congrats on the growth man! Who would ever think that a niche channel like this would reach a quarter million views?!

[@felixokeefe]

this is a really impressively well made unit. considering its a novelty item, amazing.

[@hotdogs1026]

You know what's next...taking it outside with an unopened can of guiness and surging it hehehe

[@ahettinger525]

Waste of a good meal.

[@hotdogs1026]

Waste? Possibly, but it's FOR SCIENCE.

[@sebimoe]

It's not a waste if you call it catch all you can challenge

[@jaxjackson4100]

ha just find a college student and challenge them. fun science .... or social experiment.

[@maicod]

+Hot Dogs the equivalent of dropping mints in coke huh :)

[@jaxjackson4100]

Could the 16 pin ic be a PWM controller. Which would make sense if it's being used to generate the ultrasonic frequency. The 8 pin ic could be a custom pic controller.

[@rationalmartian]

I don't think it is carbonated, as such. It is gassed with Nitrogen I believe, that is what gives it the fine bubbled texture, due to the different gassing.

[@bigclivedotcom]

Ah, that could also help with long term preservation.

[@bryanhumphreys940]

Nitro beers like Guiness usually use 'beer gas' which is a mix of around 1 part CO2 and 3 parts Nitrogen. Beer under CO2 can be preserved fairly well, it's actually the alcohol content that is more important. Guiness being a low alcohol beer is one of the reasons why it doesn't travel well. The nitrogen isn't very soluble so it escapes right away in a lot of really tiny bubbles leaving behind some carbonation when it's poured from the tap. I'm guessing the surger is to help encourage the nitrogen to leave because of some process to do with canning it.

[@stamfordly6463]

Draught Guinness is "nitro-keg" IIRC but I'm not sure that the canned "draught" is the same. I'm told by pilots that they are warned that nitro-keg lowers g-tolerance but messes don't have the same warning for the canned stuff.

[@eyechubcunt3322]

they use N in their kegs and also draft cans. N cant stay in solution at normal pressure. so it comes out and the tiny bubbles agitates the beer making the head.

[@antonymitchell3385]

It is carbonated, but with a fairly a low level of carbonation, a higher pressure nitorgen/CO2 mix (called 'Beer gas')is used to force it through a tiny hole in the tap. Which knocks the smaller-than-usual amount of CO2 out of suspension in the beer, and creates the 'cascading' seen in a glass of draught guinness. The ultrasonic vibrator has a similar effect, a low-carbonated version of guinness has the CO2 knocked out of suspension by the ultrasonic transducer, instead of the high-pressure/small orifice combination. I imagine a low-carbonated beer like Bass would work rather well with this. ''Draught' cans of Guinness use a 'widget' which is a sort of like ping-pong ball with a pinhole in it, this fills with guinness in the can, and when the pressure is released by opening the can, the guinness is forced out of the widget by the pressure differential, giving a similar effect to the tap-poured guinness. I think these are pressurised with the CO2/N2 mix.

[@MajenkoTechnologies]

If I had been designing the circuit the "transistor" would have been a regulator, and the 16 pin chip would have been an H-Bridge to drive the transformer.

[@brianallen9810]

Seems pretty well made, not like the usual Chinese electrical death traps that you tear apart.

[@theLuigiFan0007Productions]

Indeed. Especially the fact it's actually properly sealed, and it uses nice heavy transformers.

[@ferguson20diesel49]

theLuigiFan0007 the Irish don't like crap or badly made things

[@theLuigiFan0007Productions]

Ferguson 20 diesel Well that's good to hear. If people don't won't cheaply made items there will be incentive to make things properly.

[@CitarNosis317]

To be honest I am sure it is made in China. The difference is that when Western companies use Chinese manufacturers, they QC stuff proper.

[@peterweber79]

you get what you pay for ;)

[@lmaoroflcopter]

I have one of these. it's bloody brilliant. you do have to use surger specific cans and it's best to keep them fridge chilled, then poured very very slowly you want zero head. then push the button and wait, the head stays stiff right to the end of the pint, tastes almost as good as draught, world away from traditional gassed Guinness cans.

[@cup_and_cone]

Definitely buying one of these. Seems like great way to 'refresh' a beer you're halfway through and had been sitting a while.

[@cup_and_cone]

Well so much for that idea... it's 12 years old and only sold in UK. Any on eBay are basic sold as overpriced novelty. I wonder why no one else has made a new version...

[@templebrown7179]

It just makes your beer flat. You can find ultrasonic transducers on eBay for quite cheap.

[@cup_and_cone]

Would be fine if you drink it right afterwards. It's restoring the effervescent mouthfeel and aroma...beer snobs swirl beer quite regularly. I did find this: sonicfoamer.com/product/sonic-foamer/

[@SonOfFurzehatt]

My grandfather was a publican and a bit of a crook. He used a small electric whisk if someone's Guinness lost its head.

[@ShortFilmVD]

I've used the bar top versions of these at work, I assume the inners are the same. After a few weeks of people surging ice-cubes, air, cans, fingers, salt and anything that fits on the dish, the units eventually pack up. They tend to fail gradually, displaying the red wait light (when lit the unit will not surge) for longer and longer periods between uses, eventually displaying it continuously. Having now read the destructions, it does say that objects other than the exact amount of Guiness Surger should not be surged and surging non-carbonated beverages is specifically discouraged. Interestingly the temperature of the Guinness to be surged makes a big difference to the amount of foam produced, warm cans readily overflow whereas colder ones behave fine.

[@zx8401ztv]

What about applying that disk+circuit to your etching tank clive? Faster etching :-D Looks well made. I thought the 16 pin chip was a pic chip, perhaps not.

[@inspirality]

It looks like these (the domestic units) were withdrawn quite a while ago due to not selling very well, which is a shame. This may have been due to Diego (parent company of Guinness) not effectually bothering to advertise their existence... I believe regular Guinness is 'carbonated' with a 75/25% mix of Nitrogen and Co2 which produces a nice creamy head. Unfortunately this can give some people a quite nasty headache the morning after... Very interesting as always, cheers Clive.

[@__WJK__]

Would be interesting to test this device to see what frequency it oscillates at!

[@GadgetAddict]

Very interesting. I've never seen one of these before.

[@outanet]

When working in an Irish pub, I discovered Guiniss is covered and pumped using nitrogen rather than CO2 which creates smaller bubbles. other ales? such as caffreys are also nitrogen , does that help? maybe surging cans are also nitrogen rather than carbon doiubleoxide.

[@0b3rz0nK]

That Piezo-Disc looks exactly like the ones that found in a (expensive) 5 - 10 liter laboratory/professional ultrasonic cleaning bath ("sonorex" I think). It had four of these, two had failed, which you could see from the missing blackening on the surface of the actual stainless tank on the other side of them. The solder connection had just fallen off of these, probably because of the vibration of course. Still, its a pretty solid FROTHBLOWER you have there. The frequency it is running at also sounds like it's on the same kind of frequency as the "DeGas" mode of these tanks, makes sense. That tank ended up in the bin despite probably being fixable, as the knob for the timer was also loose and the safety people get frightened when "compromised enclosures" are anywhere near water.

[@EastyUK]

Only place I had one of these was in a little hotel bar in coniston. You can see why it didn't take off. But it still tasted great.

[@AM1N4L]

I don't know a lot about electronics but I do know I enjoy watching your videos. :)

[@joinedupjon]

So you get a super powerful fog generator if you run it with water in the dish but no glass? A friend of mine likes a drink called black velvet which is 50:50 cider and Guinness... the difficulty with making black velvet is that the bar staff have to half fill the glass with the cider then stir it for several minutes to nearly completely degas it (otherwise it'll erupt when you put the guinness in) - I think a few blasts with this could degas the half pint of cider much more rapidly.

[@misschief4283]

I got to be honest if I went to a pub an ordered Guinness and they served me a can I would not be happy! I'm not sure that giving me head improves the situation ;) Do they charge standard prices?

[@benedictnothing]

Flippin' love Guinness! Was hoping someone would do a Guinness sonic bath teardown. Glad it was you!

[@Zerbey]

You should find some nice English ale and surge it, I'm interested to see what kind of head you would get. Or maybe a different stout like Murphy's?

[@joinedupjon]

I'm curious about what you'd get if you put sand in the dish - chladni patterns, fluidised bed of sand... or would it all just jump out?

[@benmooe]

I can give you some background on these surger units. Basically to have a guinness font/tap fitted you need a specialist stout system with a nitrogen intake. The systems cost bars about £2k minus the cost of gas. If the bar doesn't have the footfall to warrant that kind of purchase they have the surge system which can consist of a faux font for pouring and the surge system as the glass holder. You can buy the cans made for surge at any Makro or Booker cash and carry, they are obviously more expensive than the supermarket tins but that's down to a multitude of factors including they are for individual licenced sale etc. A surge font can cost about £150-£200 depending on supplier. Hope this helps fill in any gaps you might have about this :)

[@AsgardProductionsSE]

They sell special cans on amazon of guinness to be used with the surger.

[@DynaLowrider]

Wow what a journey this has been! It has taken me almost a year but I have finally caught up on all the videos starting from the beginning. I've spent many nights falling asleep to Clive's voice. Snuck videos in during work. Hell...even a well timed video while on the can. I guess I can stop ignoring the new video alerts now. This is weird. I've also caught up on all of AvE's videos (which initially led me here) so now what do I do? Oh....hello Demolition Ranch....

[@TonyGirling]

I've seen the speacial tins of Guinness for sale in my local cash & carry: Bookers. So maybe they'll turn up in Tesco soon? They didn't supply the surger units though so I didn't buy. A local pub has been using this system for some time because they didn't have a great demand for real draught Guinness (the barrels were being wasted after going past the sell-by date with some stout left). The tin system lets them buy on a 'just in time' basis.

[@wavecreatures]

Great video as ever Clive! Would love to see you do something on Nixie tubes or decatrons. Just an idea. Best regards Phil 🙏🏻

[@PaulWebsterLincoln]

if I recall from the pub days... you can get the proper 'surger' guiness cans from bookers

[@donaldasayers]

Guinness when served from a keg is pressurised with CO2 and nitrous oxide, apparently the N2O is responsible for the fineness of the bubbles. I wonder if the special cans have N2O in them?

[@iFuugz]

Donald Sayers yes, they do. They actually have a white plastic ball inside that release the N. scared the shit out of me the first time I poured one and heard something rattling around inside the can haha.

[@UnitSe7en]

Nitrogen, not nitrous oxide.

[@donaldasayers]

Thanks, I was misled. Thank you for the correction.

[@idletoil9786]

The proper name for the ball device is a 'widget'; google 'beer widget' for an explanation of how it works.

[@DoRC]

i wonder how this would be as a mini ultrasonic cleaner.

[@JJayzX]

Do R/C! I'm about to look the discs up to see how much they are and just make my own.

[@adymode]

Surely thats not a smoothing cap but a charge reservoir for generating pulses at higher wattage than the power adapter. I wonder how much energy is involved in the proceedure - maybe 50w for half second?

[@lightchipster]

I used to work in a bar and sometimes surged leftover drinks when it was quiet.

[@stonent]

I wonder if you could just do this with 2 555 timers and 2 transistors? Set one as ~32khz and the other as a one shot timer. Click the button, buzz for 3 seconds and stop.

[@JohnDoe-qx3zs]

A 556 (dual 555) would also run fine from an unregulated supply, so no mystery regulator needed. Now I haven't checked how to make the 555 crystal controlled to hit the resonance of the output. Or maybe someone can come up with a circuit that uses the output crystal as its resonant element. But for a premium product like this, building it down in cost wouldn't really make sense anyway.

[@stonent]

Well it wouldn't have to be dead on perfect. This would work. 0.0001 µF capacitor, 1 KΩ for R1, 220 KΩ for R2 32721.0884 Hz. 50.1 % Duty cycle.

[@Ameto]

I wonder if it could be modified with a lower voltage transformer to make it work properly on drinks that have higher carbonation

[@mannhimself]

I remember my bar had one years ago. pretty much replaces the wiget ball inside the can. Really cool device.

[@KarlBaron]

That's quite the large capacitor you have there

[@jeffgendron1959]

I wonder if the P274+ is a special opamp that is a variant that Guinness has numbered. There are a lot of 16 pin opamps and even some 14 pin that have 274 in the name, they are all quad channel as signified by the number "4" though.

[@herrpez]

Would using less water perhaps be better for compatibility with your regular cans of Guinness?

[@hendersonjp]

Have to agree ,I and my wife love Guinness surger, we purchased the unit off amazon ,you can buy the drink from them aswell (not cheep) or if you have an account with Bestways.

[@sambartle]

If you want to try a proper surger can, I have some 'slightly' out of date ones from when they were available in Tesco.. they went out of date in 2008 though.. but ill happily send you some to try. They are similar in design (but not the same) as the ones pubs now have, but you cant seem to buy those unless you are a pub. (the surger unit was free with 2x4 packs back in 2007)

[@snigwithasword1284]

I feel like I can see something similar to a 2d standing wave at the bottom of the glass in the top down perspective right when the ultrasonic turns on. (Like a Rubens' Tube.) I'll bet some additional experimentation could coax out something much more impressive. (Different glasses, or modifying the frequency somehow.)

[@newjerseybill3521]

So, by the looks of it, you can use your favorite fizzy drink for a fast go / no go ultrasonic cleaner test?

[@ZILOGz80VIDEOS]

read the title and thought Guinness had made an overlock sewing machine for a couple seconds.

[@devjock]

Time for an outside experiment. Put an OPENED full coke bottle on it. No need for mentos anymore ;)

[@WSADKeysGaming]

devjock unopened :)

[@devjock]

won't explode. PET bottles can handle pretty high pressures.

[@Chuckiele]

At least with mentos they indeed can explode.

[@brianartillery]

Does it only affect cold, fizzy drinks, or could it be used to agitate sugar in tea and coffee, if you're just too idle to stir them?

[@ZenoxDemin]

It's probably faster for bar to pour quickly guiness that doesn't have the foaming widget in it and then surge it, than it would be to slowly and carefully pour it in a glass from a normal can.

[@ABaumstumpf]

That smoothing-capacitor - wow is that huge. How much power does that piezo-disk take - 1W? 5 W ?

[@BlasphemousActs]

This is extremely interesting, I used to work in a bar with one of these and I had no idea how it worked!

[@Mrhollerr]

Don't know if anyone's mentioned this but that can of guiness you showed was a can of "Original Guiness" not typical guiness. Original guiness has more carbonation than standard guiness, at least to my taste tests it does haha

[@LeeHutch89]

Been trying to get one for ages 😩 Ebay prices are crazy 😦

[@rkl08551]

what happens if you put a unopened can on it?

[@chaos.corner]

I have a question about chip part numbers. Often when I tear something apart, I will get a part number for the chip and when I try and research it, I will find several asian sites willing to sell me 100,000 of the things but no links to any datasheets or any actual useful information. Are these typically rip-offs of well known chips or how is one supposed to get information? Someone designed the circuits they're going into, right?

[@djorgen104]

So, if it requires a little water to improve the transfer of ultrasonic energy between the plate and the glass, maybe using it without water will lessen the effect on fizzy stuff like that cider.

[@andywood2012]

We used larger versions of this attached to large stainless bowls In laboratories to purge air from samples, And they are excellent for "ultrasonic" cleaning too, just drop something like jewellery, or something with intricate hard to reach cavities into a cup of water that will fit onto your disk, only add a tiny bit of detergent, then watch it clean like magic.

[@rogertopful]

Could you get some supplies and make a diy one? I would love to have one for homemade soda but I don't see paying $100 for one.

[@baitsnatcha]

Canned (and also bottled) Guinness have a sealed container (called a widget) inside that allows the included gasses (nitrogen and CO2) to be released through a small enough hole to imitate the customary dense head of the draught variety. I'm puzzled by the necessity of an agitation device like the surger...

[@azyfloof]

That smaller pad on the piezo element is indeed a feedback connection, Clive! :) The metal back is the ground, and the larger pad is the main connection the signal is pumped into.

[@CorradoMella]

If you reduce the amount of water in the tray you can use any decent beer without it frothing all the way to the ceiling. Just put a few drops in to couple the glass with the piezo plate. After a few attempts, you get the hang of it and know by heart how much water you need for your drink.

[@jasepoag8930]

Pizza-electric crystal? Curdy point? Yep, pretty sure I heard that right.

[@tohopes]

Pete's Electric Discs. Try one sometime, they're really good.

[@kennethflorek8532]

Curdy point? No. Cutey point.

[@jasepoag8930]

Oh, I was thinking that was the point where it turned into cheese.

[@stumbling]

The Pizzaelectric effect is much like the Piezoelectric effect, except the only sound you can generate is, "That's Amore".

[@OAleathaO]

+Jase Poag --> Just don't ask anyone what toppings they think are best on their pizza-electric crystal. Easiest way to lose friends and start wars. :)

[@Miketz]

So finally a tear-down of something that was fit for purpose. Did you work out what the third wire on the piezo was?

[@jimw83296]

i'd love to get my hands on a coupl dozen of those piezio discs......i used to use something very similar in my power cores back around 1978.......they only put out about 35 or 40 watts, but they did work.

[@Farmores]

I really enjoy when he gets excited about doing this his enjoyment is infectious.

[@4468]

I looked in to getting a surger unit last year as I do like my Guinness but like you said it's difficult finding the right cans in shops, locally and online it seems not to have taken off. I wonder if people were buying cans that were for use with the surger and returning them as they were 'flat'?

[@paulsengupta971]

They're nicer to drink than the normal cans regardless.

[@Lakes57]

I recently watched a documentary about the production of said drink, "Inside Guinness" I hope there will be a follow up video showing this unit working on various carbonated drinks. :)

[@xavierbacon7538]

Hi Clive, My path to buying a Guinness surger was identical to yours and I originally tried making one myself. Having failed, miserably, I bought one on eBay but went one step further with 24 cans of the special flat Guinness to go with it. Frankly, mine was a huge Christmas disappointment, hardly frothed at all, and is now languishing at the back of a cupboard. Next step: cue Clive’s breakdown video and a bit of bush surgery - pun intended! Cheers, Chris

[@nanocoffeebean]

Did you know that it is possible to weld/melt plastic bottle caps together using an ultrasonic humidifier? Something to maybe have fun with later.

[@darapeyton4805]

What is the Ultrasonic frequency of this yolk. Many thanks

[@ahettinger525]

Think this would work with the soda stream, maybe using less then normal CO2?

[@lwilton]

They make a couple of PIC-HV chips that have a built-in shunt regulator and can run off of higher unregulated voltages with a series resistor. Perhaps this is one of them. That 16-pin chip reminds me of an old RC servo control chip that I used years ago to control the jaw on a Teddy Ruxpin toy that in the end was never produced. Basically an H-bridge driver with some other stuff.

[@arjanwilbie2511]

Mister +BigClive.com, I need a lathe to turn left and right so I plan to convert it to a DC feed with a full bridge rectifier. Any hints on what to go for whilst reclaiming from old electrics? I also need a full bridge rectifier for 12 to 24v 150A, how can I continue?

[@ExStaticBass]

Do you suppose that that 16Pin DIP could be a voltage controlled oscillator? It's the only thing that makes sense to me having briefly seen the board from the back.

[@bigclivedotcom]

The microcontroller is driving the main switching transistor directly.

[@charliedobbie8916]

Now that's a big-ass cap! And it's just smoothing 16V at 1A... is it a crazy high capacity or something?

[@RavenLuni]

What frequency do these things operate at, also is it the same tech as those woter foggy things?

[@christesterman]

With beer testing is key....lots and lots of testing...just to make sure...because science...yeah.

[@noelobrien1773]

Hi, I hope you don’t mind me reaching out to you .. I have one of these that isn’t working, it lights up but nothing happens when the button is pressed, it worked when I got it after it being powered on for a few hours... Ive a degree in electronics but that’s going years back now .. any help appreciated to what to look out for when I break out the multimeter ... thanks

[@tomgeorge3726]

Hi Clive, can you try that with coke and menthos? Preferably outdoors.

[@GldRush98]

Guiness is quite popular in America as well Clive. One of my favorite beers.

[@monotonehell]

+bigclivedotcom Do cans of Guinness in the UK/IOM not have the widget in them? (Little ping pong ball like thing which adds carbonation when the can is opened.)

[@raymondjudd5328]

Hi Big Clive love watching your informative vids, but i have one point to make.... you did not discharge the large electrolitic Cap.

[@bigclivedotcom]

Low voltage, so no real risk. The transformer's rectified and smoothed 16.5V output would probably give 24V.

[@DrTune]

Original price (from 2006) "£16.99 for the starter kit which includes one Surger, a pint glass and two cans of Surger Beer"

[@Henchman1977]

Do your Guinness cans not have the nitrogen "widget" in them?

[@pesho9971]

maybe the mystery 16 pin chip is a TL494.the 494 has a 5v ref voltage and is in 16 pin package.It is also a chip designed for switching aplications

[@jamesharris8110]

These videos are educational and entertaining.

[@ColinJonesPonder]

The actual cans work out at approximately £2 each. They charge £3 at the club where we play skittles.

[@jesustheangryatheist]

Colin Jones Where the fuck are you buying your Guinness? You can easily find a 4 pack for £4-4.50

[@ColinJonesPonder]

I don't have a surger at home, I just did a quick Amazon search. The £3 is club price.

[@ColinJonesPonder]

Quite right on the source, but... "They charge £3 at the club where we play skittles." ...I definitely mentioned a club. Then I clarified how I came to my pricing. Isn't discussion wonderful? ;)

[@BradGryphonn]

$20 Australian for a six pack of 440ml draught cans here. $4.99 single can. $66.99 for a carton of 24..

[@jesustheangryatheist]

Did a quick look at Amazon, it appears Colin was referring to "surger" cans, supposedly specifically for use with the surger. Those cans work out at about £2 each on Amazon

[@RichardT2112]

Drinking beer, all in the name of science!! Well done Clive! CHEERS! 🍻🍻

[@phils4634]

Try an ultrasonic jewellery cleaning tank: Ebay - best price seems to be about $35 (AU) for a 35W model, and just under $60 (AU) for a more powerful, heated model. The larger tanks (being heated) have a very wide range of uses Commercially, and round the home.

[@oOMonkeyMagicOo]

Although carbonated, its the dissolved Nitrogen that produces the finer bubbles that give Guinness the creamy head. I remember my grandfather used to drink the brown pint bottles of draft Guinness. They were supplied with a syringe that you would use to draw some Guinness from the glass then inject back to make the head, pretty much does the same as the surger. Then the widget came along and done away with the syringe.

[@kasnitch]

what happens if you were to surge the ballzack?

[@Psi105]

Often when you can't get a wire to resolder it's because they used cheaper copper plated aluminum wire rather than solid copper. This kind of wire can only be heated once, maybe twice if your very fast before you just cant solder it any more. Not sure why, but i suspect the heat causes the plating to come off .

[@jeffflowers5489]

Does this use the same principle as an ultrasonic jewelry cleaner?

[@bobweiss8682]

The ceramic is likely lead zirconate titanate (PZT), which would explain the weight...

[@tommax8266]

Fantastic video, much appreciated.

[@markt84]

If you still have this and no need for it anymore I'd would be interested in buying it from you

[@PuttingOnTheFoil]

it's like an ultrasonic bath, or "sonicator," that you would run into in a chemistry lab, but without much bath area.

[@davidnull5590]

Does anyone know if sink garbage disposal units (grinders for waste) are common in kitchen sinks on the Isle of Man and Scotland? In the U.S. almost all kitchens have one.

[@bigclivedotcom]

Many sinks have the middle basin for them whether they are fitted or not. I don't have one.