Primitive Technology: Water powered forge blower (Short Video) @primitivetechnology9550

Uploaded March 2025 | Updated September 2026, 2 weeks ago

Water powered forge blower (Short Video)
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About This Video:
This is the water powered forge blower I made in another video ( youtu.be/Q_03FWDBZG0 ) but in a short version. Basically the water runs down a wooden half log and onto the small diameter water wheel causing it to rotate about 6 times per second. This powers a paddle fan in a housing that blows air into a furnace causing the fire to burn faster and hotter than by natural draft alone. The idea is that I might one day power iron smelting and forging with it, replacing the manual labour required for the hand powered blower.

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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$Primitive Technology: Spear Thrower A spear thrower is a simple tool that allows the user to throw a spear further than by hand alone. It is a small length of wood with a hook in the end that fits into a notch in the back of the spear. The extra power and distance gained by the thrower is due to the extra leverage it gives. I cut a small branch with a minor branch coming off the side. I shaped the minor branch into a spur to fit into the end of the spear. The thrower was about 65 cm long. For the spear, I cut a thin sapling approximately 2 m long and about 1.5 cm thick. I carved a cup in the end of the spear for the spur to fit into. Then I bound the back of the spear with bark fiber to prevent the wood from splitting. The head of the spear was simply charred in the fire and scrapped against a rock to sharpen it (during practice the head regularly breaks so only a sharpened tip is used to save work). To use the spear thrower, the spur of the thrower is inserted into the cup of the spear. The spear and thrower are held at about shoulder height. The thrower is quickly flicked forward and the spear propelled towards the target. As the spear leaves the thrower it bends slightly storing energy until it jumps of the spur. During flight, the flexible spear wobbles and oscillates paradoxically giving the spear some stability in flight. The throws in the video show what can be done in one afternoon of practice (my arm got sore and I wanted to start on other projects). I hit the target a few times at a distance 15 m. It is more powerful than a spear thrown by hand alone but is difficult to learn. The spear I made could have been a fraction lighter and so would have greater speed. Another improvement would be to add flights to the spear so it would be more accurate and fly straighter (like an atlatl). The extra energy gained from a Woomeras (Australian spear thrower) use has been calculated as 4 times that of compound bow (Wikipedia). Its easy to make (this took less than a day) but requires lots of training to become accurate. Wordpress: https://primitivetechnology.wordpress.com/ Patreon page: https://www.patreon.com/user?u=2945881&ty=h I have no face book page, instagram, twitter etc. Beware of fake pages and call them out on it!$

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