Primitive Technology: Crossdraft kiln
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Publicado 2019-07-12
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Primitive Technology: Crossdraft kiln - Building a crossdraft kiln from scratch.
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About This Video:
I built a cross draft kiln and fired a pot in it to test ideas about how cross draft kilns operate. A cross draft kiln is one in which the flames travel from the firebox and across a horizontal wear chamber before traveling vertically up a chimney and out of the kiln. Unlike an updraft kiln there is no perforated floor that the pottery sits on. Instead the pot sits on the floor of the wearchamber as the flames pass around it.
Taking soil from a previous kiln and mixing it into mud, I formed the kiln so it was less than a meter long. It was 25 cm wide and tall inside the tunnel formed by the kiln though a slight curve was added to the tops of the side walls. The walls were covered with sticks and a roof of mud was put in place onto this. A chimney about 25 cm wide and 65 cm in total height was made at the end of the kiln to draw flames through the kiln due to natural draft. 5 grate bars made of clay were installed in the firebox to make combustion more efficient. A side door was cut into the kiln to access the ware chamber (25 x 25 cm).
Clay was taken from the creek bank and mixed with previous crushed pottery as grog. It was formed into a pot with a pouring spout. This was dried and then placed into the kiln. The kiln was fired with the flames acting as planned and the pot was fired in a relatively short 1 hour and 20 minutes. It would have been a shorter firing time had the kiln not still been wet. The pot was tested with water and held it satisfactorily.
Cross draft kilns are an apparent improvement on updrafts with the reasoning being that more efficiently retain heat as the hot gasses don't immediately exit the kiln leaving the colder gasses inside. Hot spots are less likely to develop giving a more uniform firing of the pottery. Cross draft kilns developed early in Asia, evolving from the practice of excating tunnels into the side of hills to fire pottery. It's unknown whether the European cross drafts were adopted from the east or were the result of the gradual extension of the firing arch outwards from the conventional updrafts. My personal experience is that this type of kiln fires quickly and evenly though I need to experiment more to understand the positive and negative aspects more fully.
About Primitive Technology:
Primitive technology is a hobby where you build things in the wild completely from scratch using no modern tools or materials. These are the strict rules: If you want a fire, use a fire stick - An axe, pick up a stone and shape it - A hut, build one from trees, mud, rocks etc. The challenge is seeing how far you can go without utilizing modern technology. I do not live in the wild, but enjoy building shelter, tools, and more, only utilizing natural materials. To find specific videos, visit my playlist tab for building videos focused on pyrotechnology, shelter, weapons, food & agriculture, tools & machines, and weaving & fiber.
Todos los comentarios (21)
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When you are inevitably approached to give a TED Talk, instead of declining, can you accept. And then for the entire 20 minutes just quietly build something on stage.
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100% true primitive technology 0% underground beach houses with pools
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I've taken ceramics courses using nice, fine ground clay and modern pottery-making tools and my pots were garbage. This guy digs some clumps out of the ground and makes gorgeous pieces of functional artwork. I am both amazed by your talent and embarrassed by my lack there of lol!
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The only guy I trust when. They "say" "I did some building off camera".
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it's going to be weird to see a diamond play button in your hut
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9mil subs and still doesn't make us sit through ads. What a guy 👍
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These videos are all amazing but my favorite part is... people use the word technology today to mean digital electronics. Technology is SO much more than that. This channel is a reminder that we are all standing on the shoulders of giants. We have so much to be grateful for, and we owe future generations similar contributions to what we have received and continue to receive because of the labors and experimentation of our forebears.
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I wish I had half the consistency, in any aspect of my life, as this man has with his clay mixtures.
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Guy drills an ember in under a minute, bare-handed, no bow. Leaves camera running the whole time, every time. Huge middle finger to every other "survivalist" channel out there.
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The only primitive survival channel that isn't about building swimming pools.
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Totally not waiting on the voice reveal ever since I was 9
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This dude, without saying a word but sharing so much, changed my life. Right now i'm building my house with clay and straw, without depending on big stores and radioactive building material, without having to drive to buy stuff, and it just feels right and damn good. Through his simplicity and humbleness he just made me believe it was possible. Endless thank you's Mr. Primitive Technology Man.
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20% Austrailian nature. 20%Half-naked man. 60%Clay.
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Friendly reminder to turn on Closed Captions because he describes in detail what he is doing throughout the video there.
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I'm pretty sure this guy's mom told him to play outside so out of spite he's slowly evolving through the ages till he can manufacture his own computer to play on.
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What's wild is watching this guy nail absolutely everything he does while other creators fly themselves all over the place to get the best materials and only produce small ugly things after multiple failures. That or they get professionals to build and create the pieces using modern tech. He makes this look deceptively easy, but he's got immense skill.
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Step 1: Build clay kiln Step 2: bake a pot in it Step 3: get water and pour it over ground Step 4: MOAR CLAY
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Archaeologists: finds pyramid in forest "I wonder when this was built?" Primitive Technology Guy: walks by "Oh yeah, I built that last Friday."
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just finished making my mud brick furnace i have been studying and watching your videos for a long time and im no where near your level but i am getting pretty good keep up the good work
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My favorite thing about his channel is no talking just sounds of nature and his work.
