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Primitive Technology: Crossdraft kiln

Primitive Technology
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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.

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12 Jul 2019

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Ruben Quesada
Ruben Quesada Vor 11 Stunden
Ur so hot !
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Molly Eck Vor 12 Stunden
Damn the live action dr. Stone looks great
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Tuan Pham Vor 20 Stunden
Khủng ri à
Urgermane
Urgermane Vor 2 Tage
Every other youtuber: I'm really happy with how my water-pot turned out. I love the design and how well it works! If you agree, leave a like, comment and subscribe. John Plant: Holds water and pours it satisfactorily.
yekhjino
yekhjino Vor 2 Tage
пора сделать лопату
Dog Zebra
Dog Zebra Vor 3 Tage
Reminds me of playing in the local swamp years ago.
Nicholas Slytherback
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.
i K
i K Vor 3 Tage
Ein tolles Video!! 🤗
Cương Now
Cương Now Vor 3 Tage
so good
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Stew Woodman Vor 4 Tage
Epstein didn’t kill him self
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Olenka Vor 4 Tage
🙋🇺🇦👏👏👏👏💖💖💖💖💖
Michael Bacon
Michael Bacon Vor 4 Tage
His name is John Plant
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Jeff Stanfield Vor 4 Tage
Naked and Afraid would be a cake walk for this guy!😂
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Abdelkarim Arabi Vor 5 Tage
المعلق يتعب نفسه لاننا نرى ونفهم كما رأى هو
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Bren Wallace Vor 5 Tage
500k years from now: 'some people were making video calls while some were still primitives at the same time'
Cross Nears
Cross Nears Vor 5 Tage
MAS MEMES
Alexa Amber
Alexa Amber Vor 5 Tage
Curious viewer, love your content btw, have learned so much. I was wonderinh, where are you at where you can build and survive so freely?
Alexa Amber
Alexa Amber Vor 21 Stunde
@Soham Palaiya Oh ok. Cool. Thanks you.
Soham Palaiya
He bought some land in Australia, I believe, but I’m not sure exactly where.
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Eloisa Huerta Vor 5 Tage
Me gusta se presen a mi niñes
:- D
:- D Vor 5 Tage
what is your profession in real life?
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Matthijs N Vor 5 Tage
5:44 YEET
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Orion Star Vor 5 Tage
This guy works in an amazing way.I have seen many other similar videos, but this guy is above the rest. I am going to buy his book.
Milos Paunovic
Milos Paunovic Vor 5 Tage
Congrats. on your 50th video!
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Can you build me a toilet?
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resIPSA Vor 6 Tage
I wish my toilet looked as cool as yours
T&M Studios
T&M Studios Vor 6 Tage
Guy: Digs clay. Me: ... MINECRAFT IS REAL!?!🤯
John Liam McFadden
A fired pot? Where's pot gonna get a job now?
Do Everything
Do Everything Vor 6 Tage
Make a giant clay pot pls
Z Miner Gaming
Z Miner Gaming Vor 6 Tage
So are you ever going to do something with that iron you made a while back? I think it would be cool if you made like an iron knife or something
Александр Бойцов
Этому нужно учить детей в школах.
Zach
Zach Vor 6 Tage
ooooooh /fire/
Pablo Olivero
Pablo Olivero Vor 6 Tage
El Puto amo
marcus Braddock
marcus Braddock Vor 6 Tage
great grate bars!
Survival Instinct
You have very good knowledge, I have tried many times with earthenware but never achieved the desired effect. They were cracked, cracked ... almost in most tests. I am trying to try mixing more things but it still doesn't work. Whether the product is dried in the sun or in direct fire, the results are not as expected. They continue to crack, even explode during firing. It is terrible. Thank you for taking the time to set up, rehearse and share !
Alex .Wallace
Alex .Wallace Vor 6 Tage
Oh hey, Dr. Stone cut his hair.
Steve Armstrong
Steve Armstrong Vor 7 Tage
Where does this guy live that he isn't being mauled by a thousand mosquitoes?
E-Tron
E-Tron Vor 6 Tage
Steve Armstrong He's said that he always keeps at least a small fire going to keep them minimized. I've found that helps a lot myself. Being saturated in smoke smell to cover your own scent seems to help too.
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HardTECHMedia Vor 6 Tage
Australia.
Phú vĩnh nguyễn
có ai là ng việt ko dị
goyischer kop
goyischer kop Vor 7 Tage
Curious aspie here, wondering if asd plays any part in this wonderful content? It is by far the most satisfying and calming channel I've seen.
enilenis
enilenis Vor 13 Tage
So that's why there is a hatch at the head of the Sphinx.
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Oleg St Vor 13 Tage
Чет эта печь хуже остальных.
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greasybacnstrp21 _ Vor 13 Tage
Y’all don’t know it, but u watching some primitive ASMR
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