Concrete or cement looses 70% strength when heated more than 415°c. After few uses it will just crumble. Better to use clay with, ceramic fiber/glass fiber reinforcement. Cause steel expands and can cause cracks
Well this thread suks….I wanted to make one of these😞…but certainly not going to waste the effort if it’s not going to work. I have enough worthless chunks of concrete around my backyard
sounds good. I wonder a bit whether breathing aluminum would be a health concern. I'm guessing not, as it would be sort of inert. And nowhere near as bad as breathing wood smoke, I suppose. What do you think of some guy's idea of adding perlite to the cement? I'm no expert: I don't even know the difference between mortar and concrete at this point, but I'm getting there.
I had to chisel out refectory in the afterburner section of a burn furnace for melting x-ray film and lithographs to refine the silver out ( Gave me a tan)
@@DrDavidThor loose aluminum is definitely bad for you. Neurological problems associated with heavy metal poisoning. However LOOSE aluminum, not all aluminum. For a stove to work you need something thermally stable, there are all kinds of cements that can handle the heat but they're not super common because we don't work with exposed flames in our daily lives anymore. To keep this as simple as possible I would recommend 2 metal buckets/cans/barrels/chimneys/etc that you can nest together, the air gap will insulate. It'll be light as hell and get the job done
good idea about the bucket handles. I'm wondering about whether the perlite would expand and contract and weaken the concrete. If not, it sounds great for making a lighter cement stove. I'm just starting my research. Next up is to google "refractory cement"
@@DavidHands David it's more a ceramic material process: rice husks and clay ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-i208a7FaM6Q.html&lc=UggVQm9qi1IHm3gCoAEC
Way Cool ..... Something I definitely need to make so I can cook with yard debris branches sticks twigs don't have to worry about having any kind of fuel to cook that's so awesome.
I am totally impressed. I have seen videos using a type of concrete called crack resistant??? It was used for home crafted metal smelters. It is readily available at your local big box store.
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People used to listen to their Elders, and read books. It's not like nobody learned anything before youtube .... if anything, bad ideas spread faster on the internet than in the real world.
@@danieparriott265 But with You Tube , you could start learning varieties of topics with demonstration in front of our eyes within seconds . If you have to read , it may be confusing at first or if you have to learn from someone you have to pay him or find someone who knows the art . Yes, if you want to study deeply you have to learn from someone . But for simple knowledge and basic skills like learning guitar chords etc, you can learn it very easily without the help of any person around or to purchase a book
@@stopwars8642 Towards the top, just enough below the rim for there top be time for some secondary combustion. If straight holes so do they need to be angled downwards at least 60 degrees, steeper the better to make sure air flows the right direction. More complex design can have winding channels that go down and link up with the main air inlet below. The benefits are that it both provides more heat and also gets rid of the smoke.
@@harveybc some potential difficulties with handles: top mount could interfere with pots side mount would put torsional stresses on the concrete that could fracture it. a plastic bucket with a GOOD handle (they do exist!) would be able to handle the weight.
Wow, and this was made even easier (per the title) by there not being any information overlays! Just figure it out yourself! It doesn't matter if you actually know what the materials are. Just use whatever's close by.
Our stove in the Province is like that since I was young 4 decades ago and until now. Coco Charcoal is my favorite to use as it will not make your Dirty Kitchen Dark. In the Philippines we have 2 types of Kitchen. Dirty Kitchen outside the house and one Regular Kitchen inside. ☺ 🇵🇭
What a snobby thing to say to judge a person's way of life in another culture that is probably been living like that for thousands of years and the pansy ass chef culture that's worried about a dirty kitchen outside has only been in the last let's say 20 no I'm not disagreeing with you but you know if you're living like that for a lot of years you're not going to worried about a couple of germs
"When concrete is exposed to temperatures above 212 degrees F, the boiling point of water, the moisture in the concrete turns to steam. If the temperature rises more rapidly than the steam can escape through the concrete matrix, the rising pressures exceed the strength of the concrete and it begins to spall."
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I think folks are confusing terminologies here. He’s not using concrete. Concrete would be a bad idea. He’s using a *cement* mix but did not specify what his mix is. Concrete and cement are different. Concrete contains cement, but not the other way around. It’s possible he’s using some kind of refractory mix of cement and sand. Refractory cement is a mixture of Portland cement and lime, and sometimes it can include perlite to reduce weight. That’s what I use in building pizza ovens because the temperatures are well over 1,000°. It also makes a big difference what sand you use also, and how long you let it cure. His mix is very wet, but hopefully his sand “core” pulled much of his moisture into the sand before he removed it. For what it’s worth, this type of stove is (or was) quite common across Asia, so he might be using a locally-available sourced cement mix.
Playback speed x2, makes for a far better experience - however, that said, this is a great little make video, just buy the cement used for the construction of outdoor pizza ovens.
Looks good. Very creative. How long did you let it cure? It would seem that if you put too hot of a fire in it and there's too much moisture still in the concrete it's going to crack. Maybe you start with fires that are lower in heat and then work your way up?
1 year ago, sorry, late question: I'm thinking about building this cement stove. Also thinking of adding perlite to make it lighter, though I suspect it might expand and contract and weaken the cement. Someone also mentioned using refractory cement as it's for kilns, but I do wonder about breathing aluminum. Comments? Thank-you. David Thor@@fullcircle4723
Great tutorial video, and use of materials. Did you use the refractory cement as it is less porous, and is heat resistant! Beautiful build, and this video helps with the building process. Thanks for sharing!
You can also modify this design to have two side knock-out panels to put an iron pipe through to heat a room from the outside using a hand powered or solar powered fan. Just a thought. If you really want to be off the grid or the power and natural gas are knocked out for an extended period of time.
this isnt concrete, its cement, concrete is when you add gravel to it, its the gravel which is explosive cos of the moisture that gets trapped around it, its not gonna kill anyone but could take an eye out
Great video and simple as well! Nice to know in case when the SHTF and one needs to do whatever possible to help their family survive. Excellent job on the video!
What is the supply list I can sure use the list now want and need a supply list so I can get started on mine please . Thank you ahead for letting us know
@Orc-icide you do realise your statement doesn't even make any sense, right? Firstly, if I hire contractors, they would not leave any left over concrete because they would only mux what they need and if any was left over it would be down to them to take away any waste left over from what ever job they have done. Secondly, if the left concreting, the last thing I'd want to do is make some heavy, unportarable stove, which would crack the first time it got heat through it as it's not been made with heat proof cement. The question here is what the hell are you doing with your concrete as you clearly have no idea what you're talking about. And why do you have kept over concrete from contractors? I mean how many times has this happened to you? 🤣
It has to be, for the grill, cooking grade, for the inside, any kind of wire, for the sand, can be any kind, even dirt would work, for the burners, has to be cooking quality. The cement has to be something that will hold up under heat too. You could actually buy a few bricks and make this without all the work. I have seen lots of videos about that too, and done it. Very easy, just need it to sit where it won't burn through, and have grill be something that is made to cook on.
Очень даже будет клёвая из цемента печка, правда наверняка одноразовая , декоративная , для забавы , когда времени вагон , то можно развлекаться подобными изготовками . Я по молодости , неопытности трещины в кирпичной печи попробовал замазать цементным раствором , получилось красиво , ровно . Когда высох раствор , печь протопил и все , хана моим трудам , порвало все по трещинам , да ещё сильнее чем было . Позднее уличную печь хотел за неимением глины , сложить на цементном растворе , также участь , все полопались , потрескалось . С тех пор цемент для печей , огня не использую.
