Primitive Technology: Lime

  • Published on Mar 6, 2018
  • At the old hut site (the new one being temporarily cut off by flooding) I made lime mortar from the shells of rainforest snails by firing them in a kiln, slaking them in water, mixing them into lime putty. Limestone is basically calcium carbonate (CaCO3). The general source of lime is limestone and various other calcareous minerals, though shells, egg shells and coral are other sources of lime (for more information see video on Corporals Corner channel: or Skillcults channel: When heated above 840 degrees Celsius, the lime decomposes into calcium oxide (CaO) or Quicklime and releases carbon dioxide (CO2). When water is added to the quicklime it becomes calcium hydroxide Ca (OH)2 or lime putty. From here the calcium hydroxide can then be shaped into a form and allowed to set. Carbon dioxide enters the lime putty as it dries causing it to turn back into calcium carbonate. The new calcium carbonate has then set, remaining solid and water resistant.
    In my local geography, calcareous rocks such as limestone are absent leading to a difficulty in acquiring the feed stock for lime making. However, I was still able to make lime by collecting the shells of large terrestrial snails that are native to the rainforest here. The unoccupied shells of these snails were gathered up and stored at the hut. Fire wood was gathered and packed neatly into the kiln. Importantly, the firewood was stacked on top of the grate rather than underneath it in the firebox as is the normal procedure for firing pottery. Using an ordinary updraft pottery kiln in this configuration allows it to reach much higher temperatures than would be possible during normal use. The wood was lit from above and the fire burned down towards the grate. Alternate layers of shells and wood were added on to this burning fuel bed. After adding the last layer of wood to act as a “lid” to prevent heat loss from above I left the kiln to finish on its own, unsupervised. The whole process took about an hour and a half.
    When the kiln had cooled down a few hours later, I took out the calcined shells. Not shown in the video was the fact that some shells got so hot, the dirt stuck to them turned into slag and fused to them, possibly with the lime acting a flux lowering its melting point. This extreme heat (+1200 c) should be avoided as the over burnt lime becomes “dead lime”, unable to slake in water. Most shells were still useable though. They were taken out of the kiln and had water added to them. An exothermic reaction then ensued. Heat was produced as the lime quicklime turned into slaked lime. The water heated up creating steam and the shells decomposed into a white paste. The paste was stirred and crushed pottery was added to it as an aggregate (sand is normally used for this, I just had a lot of old pot sherds lying about to dispose of). This lime mortar mixture was then formed into a block shape and left to dry. It took about a week and a half to set as we have had extremely humid, wet weather. The block was observed to have set demonstrating its properties.
    What I created is actually lime mortar, typically used for mortaring bricks and tiles together. It’s basically the ‘Glue’ that holds together the building blocks of masonry structures. From my research 20 kg of lime mortar is used on a 1 m square section of brick wall. 5 kg of lime to 15 kg of aggregate (sand, grog etc.) per a 1 m square section of bricks. The shells, though large, are not terribly abundant. A method for finding shells efficiently needs to be made before considering making lime mortar in this fashion. From my experience sand bars in a creek sometimes accumulate snail shells from higher up in the mountains. In these spots, water velocity decreases and shells in the water tend to drop out of the water column. Additionally lime may be partially replaced with ordinary wood ash in mortar without a corresponding decrease in strength. To conclude, making lime in a land without limestone is possible but can be problematic when trying to do so on a large scale.
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Comments • 13 347

  • Corporals Corner
    Corporals Corner 9 months ago +3832

    Great Video. Check out Mine on Roman Concrete

  • Kevin Wood
    Kevin Wood 19 hours ago

    Like the new ark survival evolved graphics. :-)

  • ក្មេង ស្រែ តែចិត្តល្អ

    ខ្ញុំជាកូនខ្មែរ ខ្ញុំចូលចិត្តមើលណាស់

  • Damir Zhakupov
    Damir Zhakupov 2 days ago

    Why are you dont use your previous rechnologies?

  • The Mini Yosshi
    The Mini Yosshi 2 days ago

    What’s lime?

  • Feeblex Eve
    Feeblex Eve 3 days ago

    Lime is made out of snail shells?? 🐌

  • bowser from sonic
    bowser from sonic 4 days ago

    I think you forgot to put a "S" in the title

  • Tiểu Bạch Dương

    Lm đc thạch sao k xây nhà mà đắp bùn lm gì

  • Samuel Smith
    Samuel Smith 5 days ago

    Why so many dislikes? People are fucking miserable I tell you.

  • IS Yeager
    IS Yeager 6 days ago +1


  • andrea piro
    andrea piro 7 days ago

    Man , would it be possible to make a series of videos of the many ways (if there are any) to reliably "find/make/farm" food into forests?
    I'd be curious to know if there is a way to live 100% of the woods, and it doesn't have to be like "eat insects"

  • Магомед Малаев

    Дайте ему нож и он создаст новую цивилизацию

  • BradnEcole Morris
    BradnEcole Morris 10 days ago

    So does the lime n kiln Make it all waterproof how is he waterproofing everything he makes

  • Brian Gray
    Brian Gray 10 days ago

    some claim lime mixed with water in a container makes a way to preserve chicken eggs for 8 months or more. In case you have too many eggs lol

  • Taser Tag
    Taser Tag 12 days ago

    I like this Minecraft Realism mod.

  • Epic things In the airport

    Hop you have a great day

  • Epic things In the airport

    Great video and great grafics

  • Chris Rich
    Chris Rich 16 days ago

    Please tell me you wrote a book.

  • Carolina Silva
    Carolina Silva 19 days ago

    Can you do this with eggs or bones? Both have potassium I think?..

  • BarcodePictures INC.
    BarcodePictures INC. 20 days ago +2

    I think this channel is actually made up of time travelers who have caught footage of a Homo Habilis (Handy Man).

  • Paulie Morbol
    Paulie Morbol 20 days ago

    Hey, if y'all don't wanna go snail searching you can also use eggshells, and most seashells like oysters. If you got to school, you can also steal chalk from your teacher to make lime.

  • Paulie Morbol
    Paulie Morbol 20 days ago

    If this guy ever finds metal, we're fucked.

  • Red Gecko1
    Red Gecko1 20 days ago


  • No Life Soccer Fan
    No Life Soccer Fan 21 day ago


  • Icylapras24
    Icylapras24 22 days ago

    Primitive Technology: *building a nuke*

  • Icylapras24
    Icylapras24 22 days ago

    So you’re telling me this guy hasn’t got a diamond play button but godamn ricegum does?

  • DeeBee 710
    DeeBee 710 23 days ago

    Thought I had an answer to the great pyramids for a sec😅

  • 9 c
    9 c 24 days ago

    Hes gonna find diamonds before i will 😫😤

  • Mr812682
    Mr812682 28 days ago

    old time clay houses whitening with lime in Ukraine

  • hillhead11
    hillhead11 29 days ago

    Wouldn’t it be funny if he made a big shell out of it

  • xCalibuR God
    xCalibuR God Month ago

    Other "primitive" channels are using cement not shells.. and even built a swimming pool... and so i concluded that they are fake

  • William Hill
    William Hill Month ago

    Make a snail garden lol

  • Nandha kumar S
    Nandha kumar S Month ago

    What is use

  • Sergiomadd
    Sergiomadd Month ago

    This guy needed a more robust rock like limestone and it was't in the area. So he just straight up made some.

  • Weary Bonsai4127
    Weary Bonsai4127 Month ago

    Rip snails.

  • CdoesRandom
    CdoesRandom Month ago

    Wait... that’s a rock, not a lime.

  • Keith Bolland
    Keith Bolland Month ago


  • Denis Nadeau
    Denis Nadeau Month ago

    Ladies and Gents, I give you: Trump's wall solution commercial !!! "We will build it high! We will build it strong!?!... and we will build it CHEAPLY!!!"

  • Pidong Gaming
    Pidong Gaming Month ago

    Make a house with lime you made!

  • MhaZG
    MhaZG Month ago +33

    20 years later, Primitive Technology: Empire

    • Bloss
      Bloss 2 days ago +2

      Cant wait for the episode about colonizing

    • Fire Lion
      Fire Lion 20 days ago +2

      20 years later
      Primitive technology: iPhone X

    • Red Gecko1
      Red Gecko1 20 days ago +2

      MhaZG 100 years later Primitive Technology: Space tower

  • MrMan2113
    MrMan2113 Month ago

    2:16 confirmed Australian there's a kookaburra

  • Linos
    Linos Month ago

    остаётся вопрос: зачем?

  • Crankbait Baron
    Crankbait Baron Month ago


  • Exotic Camping
    Exotic Camping Month ago

    Bro I was watching u at 500k now u at 8.8million congratulations

  • EarthmeisterIndigo
    EarthmeisterIndigo Month ago

    I live in Florida (U.S. State), so I have ready access to limestone. This vid is really helpful, me being a visual learner. Thanks, m8

  • Christopher Manfredo

    Probably the most honest of the primitive channels. Thanks for that

  • Andre Buliyat
    Andre Buliyat Month ago

    Turn on captions it explains what hes doing in case if you guys didnt know

  • Eric Ortiz
    Eric Ortiz Month ago

    The horn honks in 1:32, i think its a vehicle and r u from far away or near?

  • Trodaire
    Trodaire Month ago

    What was in that water to make the shells dissolve edit: never mind turned on annotations

  • Cyrus Hormusjee
    Cyrus Hormusjee Month ago

    Greetings. Very informative video.Thanks. Saddening to notice, those, Dislikes. Rome wasn't built in a day. Regards...

  • Jeff The Killer
    Jeff The Killer Month ago

    ai se aconteçer um apocalipse zumbi eu vo chamar esses maluco ai kskskskks

  • Robert Hunley
    Robert Hunley Month ago

    where is this

  • 3 gamers
    3 gamers Month ago

    6:09 looks like crushed oreos

  • Gamer XXL
    Gamer XXL Month ago

    This guy is living in 1018

  • Ze zen Zin
    Ze zen Zin Month ago

    Wow! Very good.

  • Diver Dan
    Diver Dan Month ago

    What's the brown powder..does it work on most bout snails.

  • Flamestone Dragon
    Flamestone Dragon Month ago

    *Meanwhile* a bug rummages around in the fire pile.

  • Stevesy Zissou
    Stevesy Zissou Month ago

    What gets me is there are like 20 people credited with captions in various languages on a video from a channel that has never once had a spoken word.

  • PrivatPauler
    PrivatPauler Month ago

    I Love your Videos

  • Mrlonlee
    Mrlonlee Month ago

    For 10 million he should do a voice reveal instead of a face reveal

  • HayTay ZQS
    HayTay ZQS Month ago

    Can you use shells from the Beach?

  • Seb[Use too]Draws
    Seb[Use too]Draws Month ago

    Now make a brick house

  • Jamieson Shelton
    Jamieson Shelton 2 months ago

    Snail shell soup = building materials

  • Samuel Silva
    Samuel Silva 2 months ago

    always thought they should teach survival techniques in school

  • turdbird skits
    turdbird skits 2 months ago

    can you also use your wood ash cement as mortar?

  • Icedira Gaming
    Icedira Gaming 2 months ago

    1:32 someone’s phone goes off

  • 変隊長
    変隊長 2 months ago


  • Brozain
    Brozain 2 months ago

    lmao hot shells shooting out of fire, causing annoyance

  • Crankbait Baron
    Crankbait Baron 2 months ago

    i would like to have an answer to my question please

  • Hans Christian Oliver Candelario

    5:51 it looks like your making cake batter lol!

  • MR. TOR
    MR. TOR 2 months ago


  • NDT của tôi
    NDT của tôi 2 months ago +1


  • 翔櫻井
    翔櫻井 2 months ago


  • Barry Mcdickface
    Barry Mcdickface 2 months ago


  • Joshua Glenn
    Joshua Glenn 2 months ago

    where are these videos shot? I guarantee there aren't any snail shells that large where I'm from.

  • Novagats
    Novagats 2 months ago

    amazing that the hut is still there and completely intact this many years later

  • Andrew Gonzaga
    Andrew Gonzaga 2 months ago

    You should really go to my Elementary School. There was big planters with snails everytime it rained.

    NUKE DUOS 2 months ago +1

    Lime stone?

  • zaineb zizo
    zaineb zizo 2 months ago

    عرب هل hir

  • H S L
    H S L 2 months ago Se alguém conhecer cogumelos alguém me diz se esse que eu coloquei no meu canal se come pfv

  • Ibrahim Shaker
    Ibrahim Shaker 2 months ago


  • Fabricio Plachi
    Fabricio Plachi 2 months ago

    O bom e velho cimento Romano

  • Maria Godoi
    Maria Godoi 2 months ago

    Existe algo além das conchas que podemos usar e que tenha um resultado igual ou parecido?

  • Денис Тихий
    Денис Тихий 2 months ago

    и что он сделал?

  • Cary Howe
    Cary Howe 2 months ago

    Now that's out of the box thinking. I know lots of people making quicklime from oyster shells but using land snail shells is sheer brilliance! You are once again my hero and a god among survivalist teachers. Most make lean tos, this guy would can build a brick house with running water in the middle of the jungle with no more than the clothes on his back. Most are yuppie survivalist, this guy is the real thing.

  • Mindsoftomorrow
    Mindsoftomorrow 2 months ago

    Primitive Technology: rebuilding Timbuktu to scale with mud bricks and vine rope

  • Thất Tình huhu
    Thất Tình huhu 2 months ago

    Dùng cây j để tạo lửa z

  • india atkin
    india atkin 2 months ago

    Celts used a lime/water paste to style their hair/ hold it out of their faces in battle. Try it.

  • Keahi Bailey
    Keahi Bailey 2 months ago

    Anyone who says he hit stone age is plain retarded. This guy is way more advanced than that. He is in the post-apocalypse (if I spelt that right)

  • R Y
    R Y 2 months ago

    カタツムリ…でかくね( ´;゚;∀;゚;)

  • Barry Mcdickface
    Barry Mcdickface 2 months ago

    Hey primitive technology. Your making me look like a lazy cunt as I can’t be fucked mowing my lawns on my ride on.. so can you tone it down a bit. Ta.

  • Kristofer Mercer
    Kristofer Mercer 2 months ago

    Wow should make that a part of your construction, well if it's hard

  • Deez Nuts
    Deez Nuts 3 months ago

    Is this what Prometheus does in his spare time?

  • Tonrock Allmighty
    Tonrock Allmighty 3 months ago

    Can you imagine a snail creeping up and seeing all those shells he'd be mortified

  • Çağdaş Eroğlu
    Çağdaş Eroğlu 3 months ago

    En sonda ortaya çıkan beyaz taş kütlesi ne işe yarıyor? Yapılış amacı nedir?

  • Hani G7
    Hani G7 3 months ago

    5:52 is that what good pussy sounds like

  • Singleplayer
    Singleplayer 3 months ago

    Looks like paint

  • Nik Lyons
    Nik Lyons 3 months ago

    So the shell are not hot? They are just fired, cooled and put in water? What about white rocks? Can I burn them and do the same to make lime? I saw one vid where rocks were dissolved using vinegar. I have literally so many questions

  • Samuel Kerby
    Samuel Kerby 3 months ago

    Could this be done with chalk?

  • Connor Gosselin
    Connor Gosselin 3 months ago

    What is lime used for tho