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 • 12 971

  • Corporals Corner
    Corporals Corner 3 months ago +3608

    Great Video. Check out Mine on Roman Concrete

    • Lian 17
      Lian 17 8 days ago

      Corporals Corner u

    • Tovfinao Leok
      Tovfinao Leok 9 days ago

      Corporals Corner I

    • Soda Junkie
      Soda Junkie 20 days ago

      JUICYROOSTER calming

    • Lungile Munerenyu
      Lungile Munerenyu 27 days ago

      Corporals Corner I

    • Shashikant Vala
      Shashikant Vala 29 days ago

      Corporals Corner week gift giveaway is going to make me look more beautiful and more likely I can see the difference in a few years and then again in a While always is the best place for me I have been there a week for my birthday I have got my dress for the girls for my hair Giveaway is my first hair and I will be

  • Chuan Liu
    Chuan Liu 8 hours ago


  • penpens1
    penpens1 10 hours ago

    Next is Iron Age we’re getting there slowly but eventually

  • Jacko
    Jacko 17 hours ago

    1:03 that poor spider doesn’t even see it coming

  • Dr Draith
    Dr Draith Day ago

    I feel like it's not very practical. Too many snails would be needed to actually build something

  • Phong Nguyen
    Phong Nguyen Day ago

    Video so good

  • Xuyến Nguyen Thi


  • Carter Matusiak
    Carter Matusiak Day ago

    what is its purpose in life

  • Joe Whitfield
    Joe Whitfield Day ago

    1 week and 8,000,000 calories later... you have a brick.

  • Guy with a missing hand

    This guy is a hard core Steve

  • zaz707 x
    zaz707 x Day ago


  • Emin Velizade
    Emin Velizade 2 days ago

    Whatching this is more satisfying than satsyfing videos

  • Aaron Daniel Donaldson

    Uuuhhhhhhhh...... huh???

  • Hwasa's throne is my face

    Now I know How I'll build my house

  • I’m Crazy
    I’m Crazy 2 days ago

    But why

  • Hüzünlü Tengri
    Hüzünlü Tengri 2 days ago

    Ormanda salyangoz birakmadi pezvenk

  • Chlorox Bleach
    Chlorox Bleach 2 days ago

    All The Dislikes Were From Shell-less Snails

  • Rodolfo Maciel fortunato

    These fire sticks have perfect shapes. How to find this in the forest?

  • Daniel Halbrook
    Daniel Halbrook 2 days ago

    Lime putty is traditionally submerged for 14 years. It's used as a render because it doesn't leave cracking that builder's lime does on the face of the wall.
    It's not the same as builder's lime/slaked lime. It was traditionally 4 times the price and now is extremely hard to get most places.

  • abdullah nika
    abdullah nika 2 days ago

    I didnt get it. What was that for ?

  • Nancy Park
    Nancy Park 2 days ago

    Hi im your new subscriber can you tell me how to treating dirty water become fresh water to drink ?

  • Вадик Куманец

    Лайк если русский, так мы выживаем в 2к18

  • Squid Wagon
    Squid Wagon 2 days ago

    That's the reason why Gary didn't come home

  • DarkDokkan Rosé
    DarkDokkan Rosé 3 days ago +2

    This is how the Romans made their concrete.

  • แบล็ค วีต้าแบล็ค


  • Filipp Dead
    Filipp Dead 3 days ago +1

    А не проще было кирпич обжечь в печи, а не ждать 10 дней ??

  • Tuan Pham
    Tuan Pham 3 days ago

    Quảng cáo mỗi lần vào xem you tobe that tưc mắt ví dụ nhu quang cáo vưa truoc lúc video này.. Nhu mây thằng rồ rồ con đien

    GRAND SCRUB 3 days ago

    whats this stuff used for?

  • Tô te vendo
    Tô te vendo 3 days ago

    Sou o único brasileiro que gosta disso kk

  • naufal hanief mafaza mafaza

    useless but cool

  • b nobody
    b nobody 4 days ago

    My favorite channel ever

  • huỳnh nhật đà lạt monter

    Chào anh em là người việt nam

  • jetski Dex
    jetski Dex 4 days ago

    Thought that was a block of Coke youd just imported lol

  • GDN BR
    GDN BR 4 days ago

    Incrível seu conhecimento sobre técnicas de construção primitiva.

  • Kyle Chapman
    Kyle Chapman 4 days ago +1

    How do people figure this stuff out "yo if we melt that snail add water we can make some stone"

  • Christian Lamb
    Christian Lamb 4 days ago

    Can we put all these primitive survival channels on an island together and see who is more successful?
    With a 24hr live stream of course

  • Melon Lord
    Melon Lord 4 days ago

    Imagine the first person to make this,
    Guy: Martha! Look! I put some shells into the fire and then when they cooled I put them in water and now it's white, I also put sand into it to make it stick to things!
    Martha: Okay, sure Dave...
    TL;DR: It was an awkward conversation.

  • Senzar HD
    Senzar HD 4 days ago

    Did anyone find your houses yet or damaged them? That would be bad

  • T Thắng
    T Thắng 5 days ago

    Where are you from???

  • Nanay Mo
    Nanay Mo 5 days ago

    That's not lime! Limes are fruits!

  • Jarico Inocencio
    Jarico Inocencio 5 days ago

    Who taught you in doing these kinds of stuff

  • YouTube's ÝøúŤûbě


  • Виктор Никитин

    how many snails i needto kill to built a comfortable house?

  • Idham Wazir
    Idham Wazir 5 days ago

    Dory? Is that you?😦

  • Wayne Rainey
    Wayne Rainey 5 days ago

    gratz, you made a pumice stone lol.

  • Daniel Price
    Daniel Price 5 days ago

    How many days before the full set of diamonds armour comes out, 3 or 4?

  • criztu
    criztu 5 days ago

    This how the Great Pyramids were built.

  • Oppa
    Oppa 6 days ago

    TBH I can’t wait for the future “Primitive technology Wifi”

  • Girang Supriatna
    Girang Supriatna 6 days ago

    Are we making gun powder ?

  • Eric Mitchell
    Eric Mitchell 6 days ago

    more like slime

  • the legendary egg
    the legendary egg 6 days ago

    Whomst’ve’d has disliked?

  • Zhang Lee
    Zhang Lee 6 days ago

    could mix it in mud to make a stronger brick

  • Miller Memestar
    Miller Memestar 6 days ago

    You should do a shirtless reveal

  • scott left
    scott left 6 days ago just made can add charcoal and ash as well....the charcoal pieces make for a lightweight concrete.....or for a good strong, waterproof limewash add a spoonful of tallow or some other animal fat should work, whilst in the slaking phase, find a source of limestone and your away.

  • Astro Wolf
    Astro Wolf 6 days ago

    Sadly there's no English captions but such an amazing video I've missed your great videos

  • Fortnut
    Fortnut 6 days ago

    Fun fact lime is poisonous

  • Imperfect
    Imperfect 6 days ago

    Ur videos are so calming

  • Paulo Schreiner
    Paulo Schreiner 6 days ago

    what for do we use a lime for??

  • gammkrab
    gammkrab 6 days ago

    Imagine how many dead snailshells to build the Colosseum

  • Yoyle 0340
    Yoyle 0340 7 days ago

    Imagine primitive technology and his fans, building a ancient city or village in real life

  • trackz
    trackz 7 days ago +2

    minecraft 4K version

  • mizumo yuka
    mizumo yuka 7 days ago


  • Morgan Smith
    Morgan Smith 7 days ago +1

    a cement block. weldone.

  • youtuber for fun
    youtuber for fun 7 days ago

    In Vietnam they use dead snails to fertilizer trees

  • Charles Vattimo
    Charles Vattimo 7 days ago

    What was the main purpose of limestone? It's not much harder than common stone, is actually very brittle, and even meltes in water.

  • Fpsdood
    Fpsdood 7 days ago


  • Javier Charlier
    Javier Charlier 7 days ago

    Wait isn’t quicklime dangerous? I heard it was used in castle sieges during defense to be dumped on assaulters like acid

  • 弐号フリーズンココア

    snail lol

  • aiyanna peoples
    aiyanna peoples 7 days ago

    What is he going to do with it

  • BarelyDying
    BarelyDying 7 days ago

    Where does he do this?

  • The Dragon’s Lair D&D Player Tips

    Sooo gonna try this out! :D Got lots of shells to burn!

  • fulltimegeek
    fulltimegeek 8 days ago

    I would love to be a patron of yours on *STEEMIT*

  • Moneyjac10
    Moneyjac10 8 days ago




  • numpty007
    numpty007 8 days ago

    No snail's were harmed during the making of this videio

  • RaUhHmUeLd
    RaUhHmUeLd 8 days ago

    Can you show us how to make cocaine?

  • Miriam Domyngues Lurdes Barboza

    Que ideia GENIAL.
    SE todas as PESSOAS fossem assim .
    O MUNDO não teria POLUIÇÃO e nem estaria nessa DECADÊNCIA.

  • Another Random Youtuber

    so what are the kiln walls made of?

  • Jerry White
    Jerry White 8 days ago

    all that work one brick in retern

  • GataMala
    GataMala 8 days ago


  • Full HD
    Full HD 8 days ago

    This is like minecraft in real life

  • TheCoolStuffHD
    TheCoolStuffHD 8 days ago

    A collab with Cody's Lab would complete my life!

  • Jeffrey Dan Woods
    Jeffrey Dan Woods 8 days ago

    How do u record in the forest and post it to yt?


    Вау, это нереально.

  • 홍영표
    홍영표 8 days ago

    Good skill

  • Hau Mang
    Hau Mang 8 days ago

    I wish I could be like him

  • Taamz Heart
    Taamz Heart 8 days ago

    I always forget theres lime in shells

  • Taamz Heart
    Taamz Heart 8 days ago

    youd never find shells in my community. theyd be all crushed

    V ANIME V 8 days ago

    Có ai là người Việt Nam không?

  • Chris Ortloff
    Chris Ortloff 8 days ago

    I realize this is a rainforest and all, but curious if you include a fire extinguisher with the limited modern conveniences on site.

    REKNUU 8 days ago +1

    Are you able to do this out of clam shells? (Non saltwater)

    • REKNUU
      REKNUU 7 days ago

      Primitive Technology Thank you for the tip, also it's wonderful you reply to your comment section :)

    • Primitive Technology
      Primitive Technology  8 days ago +1

      Yes that will also work. Thanks.

  • Racc Ceddeño
    Racc Ceddeño 8 days ago

    For What you Can use it?

  • Jonny Rawdog
    Jonny Rawdog 8 days ago


  • woodwyrm
    woodwyrm 8 days ago

    I am (more or less) speechless!

  • Hasan Can Şanlı
    Hasan Can Şanlı 8 days ago

    Ne bok yaradı bu şimdi aq

  • Tepe Tv
    Tepe Tv 9 days ago

    it's wery good

  • Tiền SAVE
    Tiền SAVE 9 days ago

    Chào a

  • 44theshadow
    44theshadow 9 days ago

    5:25 cookies and cream icecream. bone apple teeth.

  • Malcolm Darke
    Malcolm Darke 9 days ago

    It may be primitive but it's by no means crude.