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Primitive Technology: Geopolymer Cement (Ash and Clay)

Adults Construction
I have made wood ash cement before under the assumption that it was the calcium in the ash that gave it its cementitious properties...

Primitive Technology: Wet Season Destroys Thatched Workshop

Adults Construction
The thatched workshop where I produce bricks, pottery, cement and charcoal for various projects was destroyed by prolonged rain from the wet season.

Primitive Technology: One-Way Blower Iron Smelt & Forging Experiment

Adults Construction
I tested the one-way spinning blower in an iron smelt and it is more effective than the previous both way spinning blower.

Primitive Technology: One-Way Blower Iron Smelt & Forging Experiment

Adults Construction
I tested the one-way spinning blower in an iron smelt and it is more effective than the previous both way spinning blower.

Chandigarh a perfectly planned city?

Adults Construction
Explore the construction of the futurist city Chandigarh, a project of Prime Minister Jawaharlal Nehru and planned by Le Corbusier.

Primitive Technology: Crab and Fish Trap

Adults Construction
I made a fish trap from cane and tested it over the course of a year catching various aquatic animals.

How This Guy Makes the World's Best Puzzle Boxes | Obsessed | WIRED

Adults Construction
Kagen Sound is an artisan of remarkable skill, engineering and constructing incredibly intricate puzzle boxes made entirely of wood.

Inside Japan’s Earthquake Simulator

Adults Construction
This is the world’s largest earthquake simulator, here’s how it works.

Primitive Technology: Volute Shaped Blower

Adults Construction
I made a volute shaped blower where the housing for the fan is volute shaped, that is to say a widening spiral to test the effectiveness of a one way spinning impeller.

Primitive Technology: Brick and Charcoal Production

Adults Construction
In this video I use the thatched hut to fire bricks and make charcoal in for the first time.

Primitive Technology: Wood Ash Insulated Furnace

Adults Construction
I made a furnace insulated with wood ash to smelt iron in. Furnace insulation stops heat being lost from the walls of a furnace and so increases the heat within the furnace.

The Figure 8 Knot Has Never Failed. Why?

Adults Construction
Modern roped rock climbing, one of the nerdiest sports, relies almost entirely on a single type of knot for safety: the figure eight knot.

How One Design Flaw Almost Toppled A Skyscraper

Youth Construction
Dig into the unique engineering of New York City’s Citicorp Center tower, and the design flaw that threatened to topple it.

Ancient Humans Made Millions Of These - We Don’t Know Why

Adults Construction
The Acheulean handaxe was the most common tool of early humans, but we still don’t know what the heck they used it for.

Explaining concrete while getting buried in it

Adults Construction
Concrete = cement + sand + gravel. Cement is the most important man-made material on Earth.

Primitive Technology: Making Charcoal (3 Different Methods)

Adults Construction
About This Video: With more iron smelting experiments coming up, I demonstrate 3 different methods to make charcoal, ranked easiest to hardest.

How To Draw A Funny Apple

Kids Construction
Today, we're learning how to draw a super funny apple folding surprise.