Primitive Technology: Cord drill and Pump drill

I made a cord drill and then upgraded it to a pump drill. A cord drill is basically a spindle with a fly wheel attached so it looks like a spinning top. the middle of a piece of cord is then put into a notch at the top of the spindle. The ends of the cord are then wrapped around the spindle and then pulled quickly outwards causing the drill to spin. The momentum of the fly wheel causes the cord to wrap back around the spindle in the other direction. When it stops the cords are pulled outwards again and the drill spins in the other direction.I made the first one with a stone flywheel then made fire with it in the same way I make fire with fire sticks. Then I made and fired some clay fly wheels, made another drill with one of the fly wheels and fitted a stone drill bit to the end. This one I use for drilling holes in wood. I used the new drill to make a hole in a piece of wood. I then put the spindle of the original cord drill through the hole in the wood, tied the ends of the cord onto the piece of wood and it became a pump drill. The cords were wrapped round the spindle as normal but now a pumping action of the wooden cross bar created the same action.This was an interesting project. For fire making I'd stick to fire sticks because the equipment is easier to make. But for people with soft hands they could use the cord drill as it won't give them blisters. It should be added that the pump drill actually took longer than the cord drill (cord: 32 seconds, pump 1 min 30 seconds -the pump drill scene was edited down to make it watchable). The pump drill had more moving parts and was constantly having problems. As a fire making method I'd choose the cord drill over the pump drill unless all the parts were well made. The main purpose I'd use these tool for is drilling holes rather than fire making. It was reasonably good but the stone bits I made could be improved and their attachment to the shaft also needs some thought. If the bit loosens and gets off axis slightly the whole thing wobbles. These drills are impressive inventions and show potential for carpentry use later on.Wordpress: page: have no face book page. Beware of fake pages.

Powerful Plays

They Are All very sad but for me the saddest are the tallking grave one and Dom and Maria one i Play gears of War on My Xbox i have 2,3 and im gonna buy All others

R Tech

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Bloothehedgehog ! - The secondary channel

Such chill vibes : )


Yeah it's depressing that some people go through this, but it's also depressing that most people only realize that this is some people#s entire life after they've been through it themselves.

Chickens Are thick

Hes One heck of a User lol

Sulman Chaudry


Thibo De Volder

Idk what that refference is -.-

Also cory has a beautiful moustache

the fish

Tom brady

Azyz 1998

Douch bags

Kut 22

2019 👇🏿

Mehnas Saleem

Why does Inga do that baby talk? Mildly annoying.

Gymnasts DUO

I think that Luke and Cody’s name should be coke

logan Zyon


Shadow Bros

Seattle Mariners

Amith Reddy

Who is watching in 2018 like if you are

melanated andlovingit

Great tribute to nip using his lyrics.... Rest in power King 👑 🙏 great contributor and a black king....SALUTE

Sabrina Beaudoin

The kiss... :o <3 Now the Rollie say the date, roll around in two-door Wraith (Two Wraiths)

Nicholas Ackley

I heard of adidas but not puma


i said at the last easter egg "get out of the water!!" did not listen!!!


your voice is so soothing to my ears


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Santhosh KD

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