CLOSE
Original image
iStock // vuk8691

Creating a Water-Powered Hammer Using Stone Age Tools

Original image
iStock // vuk8691

A "Monjolo" is a water-powered hammer made from a log and some sticks. It relies on flowing water from a stream to do its work.

In the video below, the anonymous laborer who goes by Primitive Technology on YouTube creates his own Monjolo from scratch. It's effectively a hollowed-out log placed in the path of a stream, supported by a structure of skinny beams. As the log fills up with water, it rises, then the water drains out the back and it comes crashing down again. When it crashes down, that's an opportunity for a hammer head on the end to do something useful—like crushing charcoal or grain.

The creator of Primitive Technology writes:

This is the first machine I’ve built using primitive technology that produces work without human effort. Falling water replaces human calories to perform a repetitive task. A permanent set up usually has a shed protecting the hammer and materials from the weather while the trough end sits outside under the spout. This type of hammer is used to pulverise grain into flour and I thought I might use one to mill dry cassava chips into flour when the garden matures. ...

Like all the Primitive Technology videos, this is done entirely without spoken or written language, and it's DIY paradise. Tune in for a look into what one man alone in the bush can create:

arrow
video
Meet the Largest Dinosaur Ever Discovered

Argentinosaurus and Dreadnoughtus have got nothing on the Patagotitan mayorum. This newly named species of titanosaur is being called the world's largest dinosaur (and animal) to ever walk on land.

The long-necked herbivore, which weighed an estimated 69 tons—the equivalent of 12 African elephants—and measured 120 feet long, was discovered by an Argentinian rancher back in 2014. It made waves again last year when a model of its skeleton was added to the American Museum of Natural History, alongside its original fossilized femur.

Now, with a newly minted scientific name, the Patagotitan mayorum is on full display in National Geographic's recent video. You can take a gander at this stunningly complete specimen below:

Original image
arrow
video
Things You Didn't Know Came From Louisiana
Original image
5523812480001

If you just love a chicken stuffed into a duck stuffed into a turkey, you have Louisiana to thank, not John Madden.

SECTIONS

arrow
LIVE SMARTER
More from mental floss studios