Powerful Dry Ice Fog Machine!

[@OfficialNukeDukem]

This is the content that should be on KZbin. Thank you for being educational, entertaining, and overall just genuine.

[@TechIngredients]

Thanks!

[@ddegn]

Agreed. This channel produces some of my favorite content on KZbin.

[@teaser6089]

@@TechIngredients Indeed you are one of the best on this platform!!!

[@sonofdamocles]

this is not for the masses. please do not bring them here.

[@sonofdamocles]

that said, we must cease the means of production.

[@outputcoupler7819]

Those pumps are great. They're my go-to pump for basically all liquids these days. Several years ago I decided to see just how much I could abuse those pumps and get away with it. It pumped for nearly a week continuously submerged in 90C water before giving up the ghost. Currently I've got one running my immersion circulator. One of my recipes takes 85C for four days, still no pump failures.

[@gabrieldaley5881]

While I will probably never need to construct this particular system, the explanation of the build demonstrates very useful concepts (electrical, plumbing, etc.) that would be applicable to other types of projects. Thanks!

[@satyris410]

It looks awesome, I was working weekends in my lab in the run up to Christmas and had a friend with me one Saturday afternoon. We'd had a delivery of molecular biology reagents on dry ice. Usually, messing about with dry ice was frowned upon but there was nobody around to frown... I tipped a good 15-20 kg dry ice pellets into the big metal lab sink and then with the powerful hose, sprayed a vast amount of water onto the dry ice, filling the lab floor with vapour. It was awesome but my colleague was a little worried in case somebody was walking down the corridor because it was spilling out by that point! Another favourite of mine was pouring liquid nitrogen onto the floor. It picks up any dust and hair lying under benches and drawers and scoots it away as it dances along the surface.

[@TechIngredients]

I know very well the antics of the grad student, after hours.😙 Did you know that dry ice fog is used to clean the world's largest telescope mirrors by causing that same levitating effect to float dust away from the surface? Probably the result of some grad student remembering his Saturday afternoon.😋

[@satyris410]

@@TechIngredients no fingerprints or smears! Probably best not using it to clean my phone, however

[@teaser6089]

@@satyris410 Actually I'm not sure if your phone would freeze quickly. The dancing air may work as a potent insulator for your screen. However I still don't recommend it, as I am not sure and don't want to be the cause for anyone recking their phones lol

[@borat6363]

Be careful with the metal sinks in biochemistry labs. Typically they have glass pipes due to the various corrosive materials that need to be disposed of. Putting the dry ice down the drain may cause thermal shock in those pipes depending on what kind of temperature differential the glass is subjected to. Not to mention the absolute nightmare of cleaning up a broken glass pipe that's been abused by the Sorceror's Apprentice doing God knows what kinds of experiments.

[@SpydersByte]

26:42 "its probably overkill" perfectly describes everything on this channel. No joke I occasionally laugh out loud watching these videos because of the sheer complexity of some of these projects :D

[@SkashTheKitsune]

if he is hired by NASA he would probably be asked to design a rocket to go to the moon but ends up designing one to go to Mars.... just like the Saturn V was designed for.

[@milestoitaly]

overkill? Hardly. Some would say 'not half-arsed'.

[@larrymurray5841]

No overkill when you’ve been backstage wanting more fog…

[@wearemilesfromnowhere4630]

Very nice. I use those pumps as well in my projects. A thought for a heater/thermostat is from a $11 walmart coffee maker. They use a 900 watt through flow instant water heater. I use them alone, inline, in series or parallel. Unfortunately, I've accumulated about 60 carafes, power switches, cords and such. All fun. Great video. Thank you!

[@billbucktube]

I built one of these in the 80's from a 30 gallon drum and a water heater element and drainage pipe outputs. Actually I built three of them. The second one had a raisable bucket to be able to stop the fog/mist. The third one was attached to a two wheel handcart and had two individual heater elements on different cords to be able to reach 110 outlets on separate breakers and an improved door seal since I could not see for all the fog backstage... I really can appreciate the PVC foam board, the hot water circulator and water distribution. Well done! BTW, you epitomize who I want to be!

[@Lloyd-Black]

This was priceless information for me. I've had to rely on commercial products mostly. I'll build my own the next time I need a dry ice fog machine. Pouring water over the dry ice is a great idea instead of lifting the basket up and down, it actually makes more sense. Great video, very informative, useful and entertaining.

[@TechIngredients]

Great! I'm glad it'll help.

[@Patriarchtech]

I just wanted to tell you once again how much I appreciate this channel and your work. MP you remind me of my dad who was a brilliant engineer(Naval architect by education) He like you, would always explain complicated things you would not normally think about in a an inspiring non complicated way - this way of inspiring creates curiosity and drive.

[@TechIngredients]

Thank you!

[@justins3810]

That is so cool! I have a cheap smoke machine and you're right about the sticky. This kind would be fun.

[@NOTNOTJON]

Also, for anyone using one of these in a shop, make sure to dehumidify your shop afterwards to prevent tools from rusting. Great vid as always.

[@FishFlavoredCoffee]

Every video is a master class. You are a treasure to the world. Thank you for everything you do. I can't believe I didn't find this channel sooner!

[@TechIngredients]

Thank you!

[@djough1]

When using these type of hinges it helps if you trim one of the pins so that it is slightly shorter than the other. That way the longer pin is the "starter" pin. It's much less frustration starting with one pin and then the other rather than trying to line up both at once. Great video! Thanks again.

[@TechIngredients]

Good idea, thanks!

[@tinkmarshino]

oh the neighborhood kids are in for a treat this halloween. This is better than my other ways of getting ground fog.. Thanks for explaining it all step by step.. it makes it just a bit easier than having to figure it out trial and error style.. Carry on!

[@TechIngredients]

Thanks!

[@tinkmarshino]

@@TechIngredients Thank you young man!

[@patrickmestabrook]

Man. I absolutely love this channel. More than most others, it makes me want to start documenting my processes and results. I'm presently building a large modular analog synthesizer, and getting super nerdy with it. Thanks for the inspiration!

[@TechIngredients]

Good luck!

[@Corndog4382]

This information is so useful, I’ll likely never make this project, but I’ve still learned a ton about methods and materials for other stuff. So much thought seems to have gone into every aspect of the project, wasn’t just cobbled together for some cheap clicks.

[@Chris-ib8lw]

Love the content and watch all the videos. You explain science better than any teacher I've ever had!

[@mavos1211]

Your channel is hands down the best channel on KZbin and I tell everyone I know. Would you ever consider doing a live stream with your son for a Q @ A type deal? I am sure the fans would love to know something about you and we can also chat about previous and up and coming projects. It would be great for exposure too.

[@TechIngredients]

We have thought about it. We'll probably get around to it after the short outdoor season here in New England.

[@thanatosst]

This seems to be something that would make for a great high-school science demo around Halloween. Demo the machine, then go over the concepts that make it work!

[@davidharper1211]

Very cool your channel is always a nice break from the craziness of the world.

[@jesperwall839]

Love this! I have no intention to build this, but I love to have it explained in this detail 👍😀

[@sanguinemoon9201]

Me too!

[@tomislavkefecek4443]

Thank you, can see where it went wrong when I tried to help make one of these from what I remembered seeing once 40 years ago. If only we had seen this before we started, the end result was disappointing though in principle the bare carcass of what me colleague made can be rescued from what you taught me here... Science is the best; and I passed it forward to him so hopefully we might just fix it up and get it working as well as yours does

[@dslinger7897]

I know Purdue as well as MIT have reactors and I've seen a tour of the MIT reactor on KZbin. Also on MIT OpenCourseWare they've got over 30 plus videos on nuclear fission. I haven't had a chance to check out yet. I found the plasma Project I had seen on KZbin I had meant to tell you about. Its's called the Safire project. Started as a electric sun hypothesis but with their results the project sort of morphed into something diffent. The project explores the role of electricity in planetary phenomena and I found it absolutely fascinating. Cheers, thanks for another great vid!

[@vali_odinsson]

Every wedding DJ that watches this video just upped their game, and their fee, by deciding to build this, or having it built according to these specs. Good stuff as usual, sir!

[@iMagic16]

this is one of my favourite channels, I want to be like you when I'm older :)

[@gammer338]

nothing like this anywhere else on the internet, always looking forward to the next video!

[@borat6363]

Thumbs up for PVC. The content on this channel is incredible. I was truly in awe of your solar A/C video. Have you ever heard of a compost hot water heater? Would love to see a video about thermal siphons, and how to use the principles of physics to live more efficiently.

[@TechIngredients]

Thanks! I never have heard of it, but it seems reasonable.

[@raymondkohnen2778]

Awesome video and information! Going to order the parts now!

[@TechIngredients]

Great and good luck!

[@tonyc7352]

Knowing the moisture that is carried in that fog, it hurt my heart to see it going towards the cast iron tables of your nice band saw and milling machine. I like your videos, thank you.

[@TechIngredients]

Thanks! It disapates very quickly and a simple wipe was all it needed.😀

[@the4thj]

I love that big fire extinguisher on the wall I keep a big one too. Great project love it.

[@EnUsUserScreenname]

Tech Ingredients is love. Tech Ingredients is life.

[@Ninjahat]

YEEEEEY ... a new Tech Ingredients video is out 🧡

[@lazerusmfh]

I love to watch your videos. Right up my alley, and very well produced.

[@supergeek1418]

Another great video! Well done. One other thought for a temperature controller: a PID from eBay. They can be had for less than $15 and could control to any temperature you'd like.

[@d.keenan5710]

Hi guys, love your show I first saw your Banana Brandy episode and loved it.

[@JustAnotherMaker]

Great video. Can’t wait for the next one.

[@GlennHamblin]

Thanks for the info on PVC foam board. I can think of several things to do with it. Love your channel, thanks again.

[@SeanBlader]

My first thought was Cosplay Armor, but I'd want to know how heavy it is.

[@upkpoxer]

Thanks for perfect presentation

[@rodrigoalvarez1712]

Kudos! Thanks for sharing the PDF and part list! Great new move.

[@toddwmac]

Dance floor fog machines, turbojets, "highly energetic chemical reactions", fusion reactor parts, lasers, catamarans, banana brandy and so much more..I wish I had paid more attention in my physics, chemistry, engineering and shop classes...oh yeah, and had teachers like this guy. Awesome stuff, thank you!

[@rapidunscheduleddisassembly]

awesome, so well designed

[@android61242]

Guys I love you but I want to see that boat.

[@tophan5146]

Exactly! After that video, I’ve got into a whole rabbit hole about catamarans... For example, check out this: kzbin.info/www/bejne/pIeqZoaDrN1_j7s

[@bryansychingiok]

Yeah the boat. Please.

[@codeorbs]

The boat video was my favourite, I hope we get a video on that.

[@nameberry220]

Yes! And I thought he was building something else with the battery too, an electric hydro foil?

[@garrysekelli6776]

Im on a boat. im on a boat. Etc...

[@tmmrtn]

The song at 27:23 is "NOWË - Dream On". This song was used in another Tech Ingredients video's intro, and I spent way too long trying to identify it.

[@chemistryscience4320]

So nice to watch your videos, enjoy every minute of it, and also learned a ton of stuff. What happens with the CO2 .. is there any kind of safety limit like room size vs kilograms of CO2 to not dye from CO2 poisoning ? It's fairly rare these to happen yes, but some kind of safty numbers will be nice :)

[@teaser6089]

Yes, there is. Too much CO2 in the air will kill you. You can breathe it fine, but it isn't oxygen so you suffocate. But as long as you don't fill a large part of the room with the dry ice I'm sure it's fine. If you do have concerns, just do a big vape outside haha. As long as you keep the concentration below 100000 ppm after the dry ice evaporating you will be fine. Not sure how much KG dry ice would be save for you to use, as I have no room size, temperature, etc. But if you just open a window you will be fine as long as you don't fill 10% or more of the room with dry ice

[@dennisolsson3119]

Density if air is about 1kg/m3, so 10kg co2 in a 5m*5m*2.5m room would yield a 16% concentration... Less than i thought actually, but it could be served with a warning for kids wanting a party in their room or in the garage.

[@user21XXL]

@@teaser6089 you are not entirely correct - there is a concentration at witch co2 itself becomes a problem even though there is enough oxygen - you have to remember that you need to get rid of co2 from your body - so the air needs to be at low enough lvl of co2 to accept co2 from your blood The permissible exposure limit over an 8-hour shift for CO2 is 5 000 ppm measured as time weighted average (TWA) level of exposure. In addition, the American Conference of Governmental Industrial Hygienists, ACGIH, has set the short-term exposure limit to 30,000 ppm of CO2

[@laurean5998]

@@teaser6089 no, he is not ''not entirely correct", he flat out wrong and giving life-threatening advice. Co2 will prevent you from absorbing oxygen (don't quote me but I think the increased carbonic acid in the blood decreases the ph, which in turn fucks with haemoglobin), so you can suffocate even if there is plenty of oxygen in the air. When wikipedia tells you the lethal dose is 90.000ppm, you should not tell someone he will be fine under 100.000ppm.

[@ImpactWench]

@@laurean5998 you're confusing carbon dioxide (CO2) with carbon monoxide (CO)

[@mrvelro]

Great video production and educational content, way to go!

[@DrToly]

Great! Really thorough explanation on how to build it yourself and the tricks behind the design! Thanks :)

[@FiscalRangersFlorida]

You have some great projects like this. Here is an idea for a future project: Build a method to act as a cooler for a PC desktop computer. Perhaps route liquid through a pump, or find way to blow controllable cold air into a case for those who don't have good room AC and their PC overheats like when gaming or editing videos. i.e. the ambient temp is too warm to maintain decent cooling for the PC, including the CPU AND GPU card. Find a way to pump out air or liquid cooling that is COLDER than ambient temps!

[@Bousedeus]

very cool keep up the work! i want to take these projects and teach them to some kids and get them interested in science!

[@TechIngredients]

Thanks, good luck!

[@larsandersen5505]

Very good design! Thanks.

[@heydoyourhomework]

One of my High School theater engineering students and his father built this unit from the plans you provided. Thank you. We used a 2K water heating element and a $10 thermostat w/20amp relay. It heats 5 gallons to 150f in 30 mins. A float valve and 20amp relay was used to control the heater in the event of low water. Some of the problems we encountered is the PVC board at HD & Lowes is not cheap and proved leaky. The water heater elements are made for a curved surface and were difficult to seal. We lacked the time to build the dispersion tray and used diverters to decent effect. But after getting the leaks to a minimum, the cheap thermostat burned up after less than an hour of use controlling the 2K heater. Ultimately I had to hot wire it and we got one performance from it but need to improve the efficiency of our system for more sublimation. I am interested in what sealant you used with the PVC board. Also, I noticed a shot in your other video showing a 1/4 PVC baffle between basket and water. Isolating the hot water from the ice is an improvement I want to make to add life to a load of ice. Is that baffle effective?

[@TechIngredients]

The foam board isn't cheap, but it's similar in price to decent plywood. That's just to put this in perspective. Why did the thermostat fail? It's basically doing what it's designed to do 24/7 for years. I simply sealed the box with the same epoxy that was used to fabricate the box. The trick is that the double wall thickness which allows the outer wall and joint to operate near room temperature. I tried multiple, small CPVC fittings with various hole patterns to distribute the water and prevent localized melt through without much success. The tray is much better.

[@heydoyourhomework]

@@TechIngredients Thanks. The manufacturer of the thermostat conceded the controller failed for unknown reasons. We'll try another unit. I found out they used Gorilla Weld instead of epoxy. Something we're going to change is the hinge and latches. When the lid is raised, all the condensation pours down all over the electricals in the rear of the box. And the latches are too fiddly for fast theater environments. It's a fun set of problems. The thermal properties of the PVC board are fascinating. Have you considered isolating the ice from the water with a thin sheet of it and some drain holes for water return? Whenever I opened the box, there was a cloud in it and I'm thinking dry ice is being lost when the unit is idling.

[@dannismith3038]

a great and very helpful video. thank you!

[@drevvd]

Reminds me of the Top Gear b-roll shots. Adds cool lighting effect for filming products and cars.

[@jeffreymorrison2208]

I worked special effects for many years and we made these out of 55 gallon drums, sometimes in the backlot we woukd have 5 or more with propane flame rods under them because the heaters could never keep up. This is around 1990. They use different machines now that use dry ice to cool ultrasonic water foggers.

[@theoldbigmoose]

Great content. Waiting for the ultrasonic cleaner/emulsifier!

[@TheChefmike66]

I really enjoyed this.

[@seanmckee8382]

Pretty cool system!

[@blockerman3d266]

Have you considered a pipe delivery system for additional dry ice. For example a hopper tube that self levels when the dry ice below is removed. It would require a complete redesign, but would allow for continuous operation. You could have a connected reservoir of water to maintain the level as well.

[@lasermanofphysics4570]

Could you do a CO2 and oil mix for very special effects?? Great video, instructions and instructor by the way. You speak in specifics like I do. One reason I appreciate watching your videos. Thanks.

[@garrysekelli6776]

No. Oil doesnt disperse in Air.

[@ghostindamachine]

Outstanding video!

[@erkkipellonpaa3538]

Great work as always :) Might actually build one of these one day!

[@igotyourback209]

Excellent job

[@andrewkelly2028]

0:25 Looks like you're dancing to the beat here. It's thriller!

[@Convolutedtubules]

I missed that lol. Quite funny.

[@andrewkelly2028]

@@Convolutedtubules Hah, yeah.

[@michaelnaso2239]

Fantastic work!

[@lorriecarrel9962]

My favorite channel

[@harolddavies1984]

A much cleaner way to go than heating hydrocarbons, and as always with his explanations, simple and effective.

[@TechIngredients]

I agree and thanks!

[@DT-yt2zh]

Awesome, educational, fun and interesting video's. Keep it up. Still not sure on the thermal grease vs. indium based on other information I've seen, but cool stuff.

[@cobrasvt347]

Thanks for this. I used your dimensions and welded together an expanded metal stainless steel basket that works beautifully. I will be using the system for a Halloween haunted house. 👍

[@TechIngredients]

Great!

[@QuintJer]

Nicely done sir. I have a project before Halloween 🎃.

[@TechIngredients]

Great, good luck!

[@Mishaboy2010]

Love the Walter White shout out! :).......You are the benevolent version! x

[@lodzalater8169]

Yet another amazing video. Dont know how your not over a million subs yet .

[@twobob]

Having run all types of foggers for decades it was fun to see a good version being created. (Band, lights, shows). In the old days we ran the risk of cancer for such joyous effects on a budget :) Thank goodness those things got axed. That said I sense an undercurrent here, are we going to use this to do some extremely dicey plasma experiments? Oh Please I hope so. thanks :)

[@Avishay90]

Thank you for sharing Love will win, fear will not - Love fear 💖 than it will never win 🙏

[@rre9121]

I anxiously await your armor vids. Additionally, could you do a video about home lab supplies and tools. What do you do about scales, chemical supplies, distilled/deionized water, and stuff like that. It's helpful for smaller lab operators too.

[@alexschubert]

You could also use a bulk pasta basket for the inner basket

[@alexschubert]

www.restaurantsupply.com/winco-mpn-1613-16-5-x-13-5-x-10-stainless-steel-bulk-pasta-basket

[@kenrichardson4144]

Great video! Thanks for sharing❗❗❗ 🙂🙂🙂 👍👍👍

[@mrramz13]

All the responsible people thank you.

[@samgentle]

Another way to disperse the water over the dry ice would be a fluidic oscillator. There's a fairly simple dome-shaped design called a feedback-free or dual-jet oscillator that might be worth checking out.

[@proffessasvids]

Lovely stuff lads!! Xx

[@jeffharmed1616]

Another great project thanks

[@MarkBlease]

this whole setup reminds me of the crazy thermodynamic problems my professor came up with when I was in class.

[@ala3480]

Always enjoyable to view.

[@paappraiser]

Fantastic. Im ordering a water tank element I have a old large cooler I am willing to sacrifice to see if the hot water will damage it. Will be great to use for the school plays.

[@TechIngredients]

Great! Watch out for the thin, double walls.

[@nickbrockelman]

A W3001 microcomputer temperature controller wired in series on the control side with a 110 Volt water heater element would work great. And both are cheap, plus the temp controller can be purchased as a 12v , 110v , 220v.

[@Skull11]

Thanks a lot , and take care uncle

[@TechIngredients]

That I will son, that I will.

[@ulrichkalber9039]

challenge: build one that fits into a backpack. imagine "cold Scene", the singer steps on the stage and sings, while in the same time smoke spreads from him symbolizing him being the spirit of Cold.

[@chronxdev3067]

You want 1800 watts of battery power strapped to your back?

[@derekhuber3392]

That’s a great idea. I mean 50 lbs strapped to your back, power cables tethering you, and having to stay still so you don’t slosh water about, and mean NOBODY will take your picture and make a “most epic fart ever” meme or take a video and dub in fart sounds. I mean, that could be your million dollar idea right there.

[@seongchoi6354]

Awesome Video!

[@mikeydk]

You can get both oil and water based fog machines, and oil and water based hazers. :) In hazers there are now also glycerin based ones which still use a heater, but also compressor ones which doesen't use a heater. Both the heater and compressor based ones can be found in both water and oil variants. My old Antari HZ-100 does both oil and water based fluids too. The oil based one is hanging in the air a lot longer than the water based one though, but it will also leave a greasy residue everywhere. The water based fluid does not leave the same amount, it still does leave a bit, but it will evaporate within a few hours. :)

[@borhex]

Nobody: Tech ingredients: Did I mention it's cheap? - It's cheap.

[@andrewkelly2028]

Always the biggest bang for your buck. Or thickest fog.

[@GigsTaggart]

is it really cheap? I'm looking on eBay and especially the ticker stuff like he's using is like 100 dollars for a 2 foot square

[@TickyTack23]

@@GigsTaggart For the scale achieved, yes, it's very cheap.

[@isaiahhiggins]

"It can be purchased very inexpensively"

[@Taygetea]

Though the diagram says 4'x8" i think it means 4'x8' since i checked the diagrams and it doesn't sanity check at all at 8"

[@marcelk_98]

Came here from linus, you seem like a chill (no pun intended) dude so will stick around

[@TechIngredients]

Thanks and welcome!

[@kuzadupa185]

"That way nobody knows whats going on", sounds like these parties get pretty epic

[@danthepyroman1]

This would be so cool for a wedding!

[@danielmcgee813]

One thing that I think might help with the efficiency is separately hot water from the cabinet of the dry ice which shouldn't take much to do by means of a instant water heater

[@alexferrieratx]

hey Tech Ingredients, I just wanted to drop a quick comment to support your work. I have been continuously impressed by your ability to efficiently and effectively communicate what are often very technical subjects. I realized as I was about to post this that I don't know your name, so, I looked at your profile , but your name isn't posted there either. I'm sure you've got a good reason for this, but I have a strong feeling that many of your other subscribers would love to learn about who you are as a person, and perhaps any members of your team who we don't know about. Perhaps you can make a quick auto-bio intro video Just a thought:) Keep up the GREAT work!

[@dempa3]

Well presented and very interesting as always. I left a couple suggestions for projects on the patreon page, one about a diy heat recovery ventilation (a continuation of the climate control videos) and also a DIY Digital Micromirror Device laser projector. Would be very interesting to know if you find these feasible/interesting. Many thanks for your great work!

[@josephpecoul6532]

If I would have had this in the 80's!

[@youferret]

Fantastic! Thank you.

[@brandondenis8695]

I would like to state this for safety reasons: CO2 is an asphyxiant and can kill you. If you are to use this machine please use it in a well-ventilated area (not the inside of an enclosed car) and be sure to keep pets, who are more susceptible to the higher concentrations as they are lower to the floor, away from the area. If you will use this device, at least buy and use cheap CO2 monitor in the area of use for your protection. I would also like to say, I enjoy the content of your videos, and appreciate the amount of work that you put into them, and the amount of knowledge you have in inventing and engineering.

[@transkryption]

I was thinking exactly the same thing given thunderfoot's criticism of the CrazyRussianHacker for his dry ice air conditioner. kzbin.info/www/bejne/j3rKh2WHbbGYnpI

[@13minutes88]

Not exactly. You can handle extremely large doses of CO2. I you replace all the O2 then yes, you die. otherwise there is no problem. Your body uses CO2 for life. It is not harmful except in cases O2 is missing.

[@BenFenner]

No need for CO2 monitors when using this, even in small spaces. Every living thing that breathes oxygen and exhales CO2 have built-in CO2 monitors inside their body. They will feel out of breath, and nearly all of them are smart enough and capable enough to move to fresher air.

[@HooKaLoT]

@@BenFenner Yeah, but having someone passed out drunk on the floor of a halloween party flooded with 15kg of CO2 might still be a problem.

[@eruiluvatar236]

​@@13minutes88 You can die of CO2 poisoning even with adequate oxygen . It is called hypercapnia, CO2 does bind to hemoglobin and can displace oxygen. Over 1% CO2 (more than 20 times the usual concentration in the atmosphere) it will get quite uncomfortable and at 7 to 10% it can easily cause death. I am not saying that this smoke machine is dangerous to use as I don't know and I haven't given any consideration to it but what you stated can be dangerous if someone thinks that adding 7% of CO2 to their air is fine because they will still have rouhgly 19.5% O2 vs the usual 21% they are in for a bad time. Of course what BenFenner said is true, they will feel it as what we use to sense when we need to breathe is not lack of O2 but excess of CO2 .

[@proberts34]

Very fun. Thanks.

[@iTeerRex]

Very cool! As you said it has no aroma, i thought you could add some nice smells with essential oils. To say make a rain forest scent, or what ever. It would increase the effect nicely.

[@Allan_aka_RocKITEman]

Cool project...👍