Следващо
Primitive Technology: 2.5 m Natural draft furnace experiment 23 мин 
The Most Powerful Smartphone of 2026 8 мин 
$1 vs $1,000,000,000 Futuristic Tech! 24 мин 
Glass is glass 5 мин 
Mark Rober's $60 Million Dollar Experiment 77 мин 
The #1 Most Dangerous Habit in the World! 1 мин 
Mr Bean Tries to SCARE Irma at the Cinema 🍿 | Mr Bean Live Action | Funny Clips | Mr Bean 1 мин 
The Creator Behind Outdoor Anthony Has a Workday Unlike Most People’s 9 мин 
Some places just feel like home. My Life with the Walter Boys, Season 3 is now playing! 1 мин 
Primitive Technology: Grate furnace, wood fired smelting experiment 12 мин 
Primitive Technology: Iron Prill Welding Experiment 27 мин 
Primitive Technology | Building Walls with Fired Bricks and Mud Mortar 13 мин 
Primitive Technology: Wood ash & crushed terracotta mortar 18 мин 
Jumpstart by Phone 14 мин 
Bluey Phone Review 5 мин 
Fix a Flat Tire with a FLUKE Acoustic Imager! #technology #equipment #electronics 1 мин 
Primitive Technology: Double water bellows 20 мин 
Primitive Technology: Portable pulley blower 15 мин 
Primitive Technology: Hut with Underfloor Heating (Ondol/Hypocaust) 15 мин 
Primitive Technology | Flat vs Curved Tiles, A Tough Lesson 14 мин 
Primitive Technology: Roof tiles dried by underfloor heating 13 мин 
Primitive Technology: Mud mortar experiment and firing roof tiles 25 мин 
WEREWOLF scene from Monster Town, a Fantasy Thriller Short film; a woman fighting for her survival 1 мин 
The Japanese Tsunami That Killed 20,000 People | Fascinating Horror 12 мин 
CHESS WITH THE BAT DRAGON - The Devils Bargain - Fantasy Dragon Creature; Monster Town episode 2 мин 
Wolcen 2 Extended Gameplay Demo | gamescom 2026 32 мин 
Halloween: The Game - Official Launch Trailer 3 мин 
STALKER 2: Heart of Chornobyl - Official Update 2.0: Back to the Zone Overview Trailer 4 мин 
Primitive Technology: Convection turbine experiments (hot air windmill) 13 мин 
Primitive Technology | Firing Tiles and Building the Roof on the Mud Mortar/Fired Brick Hut 17 мин 
Is It Cake? Halloween: Season 2 | Sneak Peek | Netflix 2 мин 
Why you can't comb a hairy ball, and why we care 30 мин 
Can I walk across England's most Tolkien-esque county using only footpaths? 58 мин 
Why Farmers Can't Legally Replant Their Own Seeds 47 мин 
Egypt Just Started Building a Second Nile 55 мин 
Data for the Real World 2 мин 
Dumb Ways to Build - Launch Trailer | PS5 Games 2 мин 
Anthropic reveals hardware specs and Claude updates, OpenAI talks security, and Runway's new model 35 мин 
Covering the POWER ARMOR in this SUPER ALLOY | Real Life Power Armor (Part 9/6) 30 мин 
Just NPCs (feat. Crissy) — 4K60 Music Video | MiniMax H3 Open Source 5 мин 
The Basement: Donald Hoffman | Consciousness, Math, and the Case for Letting Go 148 мин 
Ready or Not 2: Here I Come Extended Preview (2026) | Fandango at Home 
BEAST OF REINCARNATION Full 4K Prologue + First Boss Fight | New Action RPG Souls like SEKIRO & NIER 68 мин 
Hyper-realistic photograph of a white Porsche 911 991 GT3 RS with matte black racing stripes driv... 4 мин 
Best 4K Multicam Setup for Live Events! (Full Gear Breakdown) 12 мин 
A robot just swapped my electric car's battery 6 мин 
iPhone Duo Hands On! 2 мин 
Flying a plane badly, on purpose. 18 мин 
I should not have liked the world’s first smart home. 26 мин 
Her Eyes Were Green 7 мин 
This or Apple Vision Pro? 2 мин 2.5 m Natural draft furnace experiment Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications! Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2 Follow Primitive Technology: Wordpress: https://primitivetechnology.wordpress.com/ Patreon: https://patreon.com/user?u=2945881 Watch More Primitive Technology: Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2 Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2 Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2 Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2 Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2 About This Video: I built a 2.5 m tall furnace to see if it could get hot enough to smelt iron by natural draft alone. Such furnaces work by the stack effect where the tall furnace causes negative pressure inducing an air flow from the base of the furnace and out the top. I'd previously built 2 natural draft furnaces 1.5 m tall with one producing a small amount of iron (4 grams) from ore. The new furnace was built 25 cm in diameter and 50 cm tall with a chimney on top extending another 1.5 m. A charging door allowed charcoal and ore to be charged through the side without blocking the chimney. The furnace was hot enough to produce slag but no iron was recovered from the smelt. This was probably due to an oxidising atmosphere in the furnace, due to the short fuel bed and large charcoal lump size. An interesting side effect of the test was a strange pulsing combustion when the door was left open. Flames and smoke would blow out and be sucked back in the charging door rhythmically so it sounded like a locomotive. This phenomenon has been observed in wood stoves, I don't think it's exactly like combustion in a pulse jet as it relies on natural draft to get started but is similar. Air is sucked in, the gases combust blowing air out the door and chimney, the gases in the furnace become over expanded causing a vacuum and air is sucked back in with the cycle repeating. In future it may be necessary to mix carbon with the ore to form pellets to get it to convert to iron. I'd made a furnace like this bottle shaped design back in 2012 but with a grate rather than using tuyeres and it successfully made some nuggets of iron from an ore brick of ore and crushed charcoal set directly on the grate. 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. #PrimitiveTechnology #1 #2
Packages published by the creator behind this video.
This creator has not set their rates yet. Send a request and we will pass it on — the price is agreed before anything is charged.
A recurring seat in my content. Subscribers enter a queue — or a random draw when there are more subscribers than slots — and appear in the video itself, in the credits, or in the description.
per month
Price on request
A guaranteed appearance of at least 10 seconds in my next video. Price depends on where in the runtime the insert lands.
Price on request
A guaranteed appearance of at least 10 seconds inside a Short cut from one of my existing videos.
one-off
Price on request