You can make an Iron Golem in Minecraft using four iron blocks and a carved pumpkin, or find them naturally in the world.

Primitive technology is a genre of YouTube videos that demonstrate - usually over the course of about 15 minutes - how to build things without any influence from the modern world.

WHAT NEXT FOR PRIMITIVE TECHNOLOGY? Plant holds up his tiny specks of iron, the size of a fingernail, the product of a three-hour process to smelt them out of slag.