Making Dr. Stone Gas Mask From SCRATCH w/  

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Senku also said breath slowly or you'll overload it, but then you hooked it up to a vacuum pump. If you want a fair test hook it up to an aquarium pump. The air flow will be closer to natural breathing, just with infinite lung capacity. Senku also had lacquer thanks to the villagers. It's a better sealant and it's more durable. Just a few notes from a fellow fan of Dr. Stone. Other than that and making the hose to short, flawless job on the mask.

I suspect that in the chlorine test you just overwhelmed the filter. There was a crazy concentration of it in the container an a pump sucked it at a good rate. The charcoal didn’t have time to react.

Thanks for having me out Andy! This was a super cool project that people have wanted me to test for a long time, and I just KNEW you were the perfect person to do it with!

I'm happy someone is speedruning technologic history of the Human builds in the Meta. It makes me feel like I didn't make the wrong build.

I was literally just thinking today, “I wonder what happened to HTME… they haven’t uploaded in a month.” Super stoked!!

Imagine going shopping with that on. You'd have security eyeing you. "Don't worry good sir, I brought my own mask"

"I wouldn't trust my life to this but if I had to trust my life to this I'd trust my life to this"

In the anime they have a master craftsman to help them make what they want. This channel really doesn't have that so the fact that it even sort of works is kind of impressive.

You know, the fact that you have to remove your foggy glasses, is a fairly good indicator that it is not airtight. Fellow glass-mask guy here.

You know, I actually learned something from this show.... As a kid, I always thought that we just had crappy sawblades with their teeth bent... And as an adult, it never came up so it was never corrected...

17:04 Fun fact in the show they explain that the masks will only last for so long so they have to work fast while not breathing up all their filtered air.

I definitely think that the chlorine gas produced in that box was way more than the charcoal could effectively absorb. Maybe if it was a lower concentration mix with the air, the results would have been better?

You could theoretically seal the edges of the mask to your face with clay or mud, but then you wouldn't be able to talk or move your mouth much without breaking the seal. Awesome video, now I gotta go watch Dr Stone lmao

5:42 I've watched so much Forged in Fire that I instinctively found myself shouting oh no not a burn in!

If you can't beat 'em Join 'em!! Great work guys! I hope to offer a few pointers that might have made this more feasible for things that would have been known both to Senku and Kaseki. 1) I don't think the anime explains where he gets it, but in addition to the activated charcoal I believe Senku used Potassium carbonate, which (and again my chem is rusty and I was never that good to begin with) would have caused a double replacement decomposition I think leaving you with Potassium Sulfate, CO2 and Water. Someone that knows more about volcanic gasses and has had Chem in the past decade please check me. 2) Senku mentions it in the Anime, Hydrogen sulfide is denser than air, so it pools, and that's why his masks have the big glass chimneys. They're trying to pull air from where it's safer. Provided you have good seal, this is important. So the next tips will deal with how to ensure good seals. 3) Senku has billows, and they have a shallow pond area if you have someone to take the place of Ginro and Kinro, you can use the billows to inflate your tubing and check your tubing and mask for leaks, as steady stream of bubbles will let you know in a hurry where your problem area is. Or, and this is not shown in the anime, if you have bamboo and caveman glue or pine-tar etc. You can actually create any number of air or water pumps from that nearby waterfall. 4) Leather & Tube Tips: A)Making seamless leather tubing is hard, I commend you on what you've done. But there's an easier way, There are animal organs that you could prepare or use as an overwrap to make sure you contraption is actually gas tight. B) Keep in mind that all leather products are going to have a limited shelf-life and probably would need to be waxed before each use, C) The duct tape was a good idea, but you can improve seal over the mouth in several ways, such as taking the time to shape and fit the mask to the single face it was intended for (can be done with stiff leather, oil, and wax), you can fold the outer lip of the leather over to make a better seal / gasket that with crush / deform around your face better and make a more airtight seal, you can knead things into wax and create a semi-seal D) If you have a hand-spool and know the right knots, you can actually tension the leather down over the bamboo so tight that pitch / wax isn't truly needed, it's more of a secondary seal 5) Garrett Morgan's precursor to the gas mask consisted of multiple tubes to get to "clean air" (was also made of canvas, so you know leather can do the trick. Anyway, my point was if your air tube is located somewhere in the middle of your filter you could might potentially be able to trap any Hydrogen sulfide below your air intake, it's not that much denser than air so that's a maybe, but it'd be something to boost the effectivity of your device. Love the show, love the channel, those weren't criticisms, just somethings to consider. Before the reboot you'd occasionally try redoing things so maybe this is one you'd come back to. Last thing, you're doing great. More than a few things on Dr. Stone don't make sense. Chalk it up to even genius science users don't know the best ways to do everything. Your channel is awesome and thought provoking. Keep up the great work!!

Having recently taken up leather crafting I'm suddenly very happy to have modern steel knives that are very sharp.

waiting for Private Internet Access or NordVPN to sponsor the next video with a guide of how to circumvent regional blocks (for example on crunchyroll lmao)

Petition to get this man an anvil now that he's unlocked iron because im tired of seeing rocks break every time you forge on them

Really happy to see Louis popping off, he deserves the recognition.

I'm glad to see Louis' project completed! Good job everyone.

It would be interesting to compare this to the last-resort method used by soldiers in WWI: Urinate on cloth and breathe through that. Obviously, don't show the "making of" that, and I'm sure it didn't smell too great, but it is something possible with the level of tech you're currently at.

As some others have also said, if you use that leather tube again, some ribs inside the tube will keep it from collapsing then there is negative pressure such as breathing in while using this gas mask. Great video!

YOOOOO you got the sponsor!!! Yeah man! Im glad they finally wised up, cause I dont know a better video to sponsor than one of yours!

Him a couple years later be like: Today i am going make a nuke

If I used clay pots as often as you do, I would make one with a spout so I could pour all the liquids without spilling as much.

I bet the problem was with the charcoal. They should have tested it against store bought activated charcoal to see if it was working.

This series is just *AWESOME*

Guess it's time for Dr. Stone Anime and Manga to start from scratch again.

Really makes you appreciate all the hard work Senku must have done off screen.

I’m sooooo excited for this. This is my favorite channel and I am very impressed by every video

To make your rock anvil more stable, try putting it on a shallow container filled with sand and/or small rocks.

I'd say that especially since in the show they spent I think a bunch more time making multiple iterations on the mask system, so assuming that the issue with the one in this video was a hole in the tube or something, I'd definitely believe that with a few more attempts at making more airtight of tubes, as well as with some more work put into tightening up the seal on the mask bit, this could absolutely work.

Your Blacksmithing has Improved!!! 1

yoooo your smithing skills picked up quick! thats a pretty clean shape!

You didn’t actually make activated charcoal, the potassium carbonate doesn’t „activate” it, but it helps, running 300°C steam trough it will. Cody wich you made glass with has a video on activated charcoal

Always excited when you upload man

Yes finally a new video!!! Love your videos btw ❤️

Never heard of Dr Stone but it looks great! Going to have to add it to my list

Bro, give yourself a pat on the back. Easily one of your most epic episodes ever! Awesome awesome. 👍😎

The rabbit reminds me, have you gone over tanning leather? (You probably have I just don't remember). I would like to see you go over textiles and clothing, using skins and leather, along with linnen and silk. And any other cool stuff you can do with that.

Awesome, SenkU for the video!

This video is really cool. Always interesting when you post.

Suggestion for Anime to watch Ascension of a Bookworm, By the Grace of the Gods and Knights and Magic.

I like how much Lewis helped in this project

Let's go, another Dr Stone episode!

Aw that's amazing! I learnt about dr stone anime trough your chanel and I love it. It's so cool you make it happen. I'm entertained by every second of your videos :D

man make more drstone stuff maybe a smoke bomb i love these doctor stone episodes

Louis is my boy so glad you guys worked together

It’s nice to see that not everything goes well in the making process, like when the stone broke when it was being used as an anvil for forging.

Should of used some small bamboo rings to line the inside of the tube to make it easier to breathe. Don't need to be glued or anything just stacked up on top of each other and boom, flexible reinforcement. If you want to go fancy then use some green willow branches and weave a loose tube net.

RU-vid still doesn't put these videos in my recommended feed even though I watch every video on release and have subscribed and notifications turned on. I'll keep thumbing them up and hoping for the best :)

Good collab! I've been missing your vids :)

One of my new favorites

Every video I open up of yours is like Christmas.

there is an old Danish book on medieval tech and one of the projects in it is an air tight diving suit with a breathing apparatus. maybe fallow what you can in the book if your interested in improving this design

For the chlorine it might have been more effective if you had used wet fabric in the filter like they did in WWI or wet limestone pices to neutralize it.

Would be worth a revisit this should definitely have worked as this is how we made Great War era gasmasks and they worked .

i was waiting for a video like this

You definitely need to reinforce the intake tube. Coiled wire can increase air flow.

bro ive been reading the manga for the past 3 years and idk how to describe my joy about this

Best part about dr stone is a lot of the science they use would pretty much work irl (with the exception of small fictional deviations, such as foxtail millet actually being able to be made into a noodle that doesn't crumble instantly)

i think you made everything for this episode!

Wait but what about that one way valve that you made on the sides? You need active breathing for it to work, no? It closes off only on suction and opens on breathing out - so blocking path (well not fully but still) for outside air to get inside. On video it seems as if you just let it be - so it should be open.

in the show they say them selves that it does not work if you breathe too quickly, if the pump is drawing too much air, the filter does not have time to do its job. thats also why you dont smell anything i bet, because you are drawing in less air than the pump was. you should try the gas test again but the pump going 10% of max draw speed or slower, the goal is to go slow breathing speed.

I just finished season two of Dr. Stone and I think we also have to consider the fact that Senku is crazy smart. I could follow most of the science and even predicted a few things but would not be able to replicate most of it without a lot more trial and error. Minor spoilers for Dr. Stone ahead. I would have started out a lot simpler than Senku. He makes a lot of big scientific leaps at a time in the show like making a working car or phone. I'm glad the show has some limits on what he can accomplish (a true cellphone would have been hard to believe). The show is really fun though. Get excited.

you can put segments of bamboo inside the leather tube, it might be that the lack of air circulation inside the collapsed leather tube is creating a vacuum inside the mask itself and the as you said the plastic of the mannequin is letting the chlorine gas penetrate

3:23 you should use leather belts to make some sort of rotating grinding/milling machine. could go a long way with production if you have the right power source

Fun tip I learned in usmc cbrn school... standard gas masks will not effectively stop chlorine gas. Chlorine gas can basically chew straight through standard gas mask filters in about 40 minutes or so, give or take. To prevent this issue, non standard, expensive and special filters and/or filter attachments have to be used.

Im pretty zonked right now. This is fun!

Great vid

Preface, I’m not a blacksmith, just an enthusiast, but the fact that you are still blacksmithing on a rock kills me. So my suggestion is, can you make an anvil out of iron or bronze what works better than a rock. It doesn’t have to look like an anvil as we know them it could be a cylinder no bigger in diameter then the bottom of a solo cup and slammed into a log to keep it from moving so much. Just wanted to chip in. This will probably get buried.

Legendary channel.

That was Awesome!!!

This is very... Exhilarating!

i would have put a bunch of short pieces of hollow bamboo inside the tube so that it didn't collapse when you breath in but it could still bend. maybe attach them together with leather and tar before putting it in the leather tube and that would add another layer of sealing. I would have also liked to have seen your mask tested with the choline gas using a modern filter to see if it's the homemade charcoal that was the issue.

I would've used obsidian to cut the leather, it's far sharper than a regular iron knife could ever be and it has no risk of breaking cutting leather. There's a fourth way to activate charcoal as anyone that watches Cody's Lab knows... superheating it. The big thing about your rig is it's maybe 1/50th of the size of the one on the show. I think if you had a way to upsize it, it'd probably work... so long as it's sealed properly. Increasing the length and adding a distribution block carved from wood on each end, you could also add multiple pieces. 5 or 6 of the same diameter pieces you had at about 30-36 inches would likely be about the same volume as the one on the show.

the vibe keeps getting closer and closer to mythbusters tbh, which is great. Y'all dont quiiiiite have the same funding yet but definitely the same spirit!

Season 3! Let's goooooooo

Maybe would have been a good idea to have a second tub to put the mask in, so the filter is in the tub with the gas, but the mask being measured is in the other fresh one. That would have sorted out if it was the mask no working, or just improperly fit.

Charcoal has a number of useful benefits from basic gunpowder, water/air filters, to fuel for fire.

the way he said “manga” 1:58 just killed me

That pole saw you made was pretty legit man lol nice work Andy

maybe make saw with smaller japanese style teeth so you don't produce so many thin cracks along the grains of the bamboo. The one way valves really need alot more care and thought into how it's made, after testing, I found that rabbit leather works the best. there's really no good way to seal it properly by just directly making a bun over the valve, so depends on how accurate you want to get towards the source material, you might want to roll the leather over the valve, and seal the end like the butt of a tube of toothpaste, making sure the stitch and sealant is airtight. reverse it, cap it over the valve, tie it down lightly with leather string and mark spots for holes just right above the string(about 1.5~2mm apart) and puncture the holes from the underside. You don't need more then 5 holes each valve. Carefully make groves around the valve where the string is then reattach leather cap back to valve and tighten with leather string. and the glue application, oh god the glue application. the glue you've made is great stuff, but you're trying to seal pipes not dabbing vegemite to toast. Get a piece of twig and crush the end or use your hair to make a brush, then brush it on the valves in layers like you would a pipe. Brush nice even thick layers on the outside where the grains of the bamboo is exposed to seal it up. Just dabbing it on cracks doesn't get it completely into the cracks and it will leak. also bamboo isn't pvc so be mindful of the tube-like fibers it's made out of.

Q: With hydrogen sulfide (H2S) gas, would you be able to know that you're dying before you're dying? A: No. I don't know what they say about this in the anime, but in the manga Senku tells a story about how some researchers went into an area with H2S gas around their feet (they didn't realize), and one bent down to tie his shoe. His face hit the gas and he was dead before they realized anything was wrong. This also jives with what I've heard in my HAZWOPER training when they talk about going into confined spaces and the dangers of "sewer gas". H2S gas is nasty stuff.

Do more Dr Stone. Great stuff.

Was the "in and out" cycling of air through the mask a constant flow of air through the mask and back into the container? I couldn't tell from the setup, but if that's the case maybe the constant flow was too much volume for the charcoal to filter? If the flow was made to mimic slow and steady breathing (in and out), results may improve, though that's just a guess. Similarly a guess, maybe the concentration of chlorine gas in the test chamber was higher than would be naturally found on the surface. Assuming natural sources would have lower concentrations, maybe then the gas masks would suffice?

I haven't watched this channel since 2019 well now I'm back

I give this guy my respect for showing the anime scenes in sub

Great job guys! Dr. Stone is the Tony Stark of his time

crushing charcoal does not increase the surface area per-se. The surface area you are accessing from activated charcoal are microscopic pits embedded withing the structure of pieces of charcoal. if you destroy that structure completely to fines or dust or powder you destroyed the structure. Also acids may increase the porosity of the charcoal structure, but steam activation does this orders of magnitude better. the charcoal needs to be heated back up to the original temperatures used to create it, 500C to 800C, and introduce steam to the material. The cave man way of doing this would be to simply terminate your pyrolysis pit with water (slowly), before completely drenching it to remove all heat energy. Whats left will be much more activated (and larger quantities) than if you smolder-ed and acid-ed the carbon material. you can test the resulting material from your method and what i described with the iodine test for each materials adsorption ability.

I liked how he had this channel first set up

Dr stone is so awesome

FINALLY GOT THAT SPONSORSHIP LETS GOOO

I'd say that the reason why the strip reacted to the gas was because the exhale tube is open when the mask is tested, because the test subject doesn't exhale and it is not sealing the one way valve thing.

good works👍

Gas mask: a full face respirator with style filter. Half face respirator: What they made in this video.

glad I'm finally watching this non ironic asking the real questions

Improvement idea cut lengths of bamboo and hollow them out to keep your tube from collapsing and the cuts will allow gaps for flexibility

You should make a pump for ur next video, which could help u in developing knowledge on how to make a piston.