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. FAQ Q.Where is this? A.This is in Far North Queensland Australia. Q.Do you live in the wild? A.I don't live in the wild but just go into the bush to make these projects. Also I camp out here occasionally. Q.How did you learn all this? A.Researching books and internet plus trial and error. I'm not indigenous and have no army training. Check out my blog below.
10.9M
1.2B
86
13.5M
Sign up to see all brand mentions
Sign UpSign up to see all sponsors
Sign Up
Primitive Technology: Flywheel blower smelt/Monsoon begins
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I tested a fly wheel on the blower. Taking an old clay fly wheel from the pump drill I made many years ago, I attached it to the axle of the one way spinning blower to see how it would effect performance. The fly wheel tends to smooth out the speed of the fan and maintaining high speed despite taking longer to get up to speed initially. A smelt was conducted using the new set up and the result was less iron than usual due to the rotor coming out of the bearings at times. To fix this, the thrust bearings were replaced with journal bearings by carving holes all the way through the wooden stakes as opposed to only part way through. The new set up is more stable and has no chance of coming out during use.
Then, before the new set up could be tested, the monsoon season began and it rained nonstop for a week such that the hut had rain blowing in from its open sides making it impossible to make fire. A third wall was added to the hut made from fired bricks and clay mortar. A damaged section of roof was repaired with tiles salvaged from the old hut. Then I build a small water wheel that rolled up stream on wooden tracks to make use of the water. Looking forward I will probably do some water powered projects until the wet season eases.
00:00-00:28 Flywheel blower
00:28-08:47 Charcoal
08:47-11:55 Flywheel blower fire test
11:55-12:29 Furnace
12:29-13:17 Ore
13:17-13:39 Firewood
13:39-15:05 String
15:05- 15:35 Fill furnace with wood
15:35- 16:59 Fire by friction
16:59- 17:33 Preheat furnace
17:33- 18:48 Fill furnace with charcoal and ore
18:48- 19:18 Smelt
19:18- 21:08 Product
21:08- 21:44 Crush product
21:44- 23:34 Pan slag
23:34- 22:53 Iron yield
22:53-24:16 Change thrust bearing to Journal bearings
24:16-26:10 Set up new blower
26:10-27:48 Monsoon begins
27:48- 29:55 Add 3rd wall to hut
29:55-31:14 replace broken roof tiles
31:14-31:26 Miserable Monsoon
31:26-32:45 "Water wheel on rails that rolls upstream" toy
32:45-33:09 Hut and blower, end screen
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.
#PrimitiveTechnology #flywheel #fireplace #building
Primitive Technology: Tile Capped Mud Walls
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I built Mud walls and capped them with roof tiles to protect them from rain. Mud walls if left uncovered in wet weather will dissolve in the rain and collapse. I wanted to test a solution to this problem by covering the walls with roof tiles. I start the video firring the roof tiles made in the previous video before making another batch to dry out ready for firing. Then I started building the mud walls by digging a foundation trench and filling it with rubble. The rubble was then capped with large stones completing the foundation. This was done so that water at ground level wouldn't wick up the mud wall and weaken it. The mud was then made from water and soil around the build site. The mud was then piled in layers about 5 cm thick and 25 cm wide to form 2 opposing walls 2.25 m long. When the wall was 75 cm high, the bricks were laid on one side of the tops of the walls and the tiles put on these in such a way as to give them a 30 degree slope. It then rained on the walls without ill effect. The tiles can be taken off and new layers added periodically. The mud wall capped with roof tiles seems to be a good process for building mud walls in a wet climate. Hopefully, it will work before a roof can be built over the walls.
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.
#PrimitiveTechnology #tiles #wall
Primitive Technology: Water Bellows (uses water instead of leather)
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I built a Water Bellows. It’s an upside-down clay pot with an inlet valve and an outlet spout. The inlet valve is simply a hole in the pot with a leaf plastered to the inside with wet clay so that it forms a one-way flap valve. When pushed down into water, the valve shuts and air is forced out of the spout and into the fire. When the pot is lifted in water, air is sucked in through the open inlet valve and the cycle repeats.
I got the idea from a Food and Agriculture Organization website I saw years ago. A Google image search for “FAO water bellows” gives an image of someone using a more complicated version at a brick forge in Zimbabwe, possibly from 1994, but I can no longer find the original diagram or description. From memory, the air and water containers were steel drums and there was a U-shaped pipe to convey the air down from inside the air drum when lowered, through and out the water drum and into the fire. Air entered an inlet valve in the top of the air drum when lifted. There may also have been an outlet valve which would presumably have been located on the outlet pipe. The pipe remained stationary through the cycle.
My design is a simplified version of this with a spout leading directly from the air pot into the fire. The spout moves with the pot instead of being fixed in place as it is raised and lowered. The spout nose is resting in place on the ground in front of the fire acting as a hinge, with the whole unit acting as a lever. If the nose of the spout is resting in the entrance of a fixed tuyere (air pipe) then the angle of the jet can be kept constant with the added advantage of the venturi effect drawing in more air. My design also only has one valve (inlet) for simplicity.
The bellows produced a similar effect to the traditional blacksmith bellows without requiring leather to build. It seems to produce a higher-pressure jet of air than the blower I’ve used previously. It’s also less complicated to build, with fewer perishable materials and has fewer moving parts that often break or seize during use. It should be easier to maintain, more ergonomic and require less skill to use. My next step is to conduct a test iron smelt with the existing prototype and compare its performance with the old blower. Possible improvements could be made where it would be made a double acting bellows with two connected pots similar to the Peruvian whistle jar but with 4 valves to direct air flow. It could also be made larger or two could be used at the same time.
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.
#PrimitiveTechnology #WaterBellows #claypot
Primitive Technology: Polynesian Arrowroot Hashbrown
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I made a hashbrown from Polynesian arrowroot. A hashbrown is typically made from potatoes where it is mashed and baked on a pan. Here I made it from wild growing Polynesian arrow root instead of potato. I'd made Polynesian arrowroot starch before but this time I cooked the mash along with the starch. It made a sort of gelatinous pancake, similar to dishes made with cassava. The mash needed soaking in water to eliminate bitter compounds that make it unpalatable. The pancake was starchy and still slightly bitter due to time constraints but would taste better if soaked and drained more times. It would make a good famine food if none other were available as the starch is high in energy.
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.
#PrimitiveTechnology #survival cooking #arrowroot
Primitive Technology: Geopolymer Cement (Ash and Clay)
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I have made wood ash cement before under the assumption that it was the calcium in the ash that gave it its cementitious properties. It may however be a type of geopolymer cement, where the cement is activated by and acid or a base (in this case a base). The acronym NASH is used to remember the material needed: sodium, alumina, silica and H2O. All of these are present in the materials used here.
I did some experiments to see how to produce the cement using ash and fired clay from broken bricks. The first method was to take ash from a cold fire and form it into pellets. One pellet was left aside to dry while the others were calcined by firing them in a forge with wood. The calcined pellets were then mixed with terracotta in different proportions (ash: clay 1:0, 1:1, 1:2, 1:3). All samples survived a water test after setting for a week except for the sample made from cold ash that had not been calcined. This demonstrates the need to calcine the ash at a high temperature before use.
Next I built a furnace with a grate for calcining ash to prove it could be done with natural draft rather than the more laborious blower method. An ash brick or clinker was made from a cold fire and was placed on the grate and fired. The clinker was then taken out, mixed with terracotta and formed into various shapes. One sample was mixed with sand as an alternative to terracotta. The samples all survived the water test after 2 days of setting though the sand sample isn't as strong as the terracotta ones.
Finally, I took the ash from the furnace and used it as is without forming it into a clinker and calcining it. My theory was that ash from the furnace gets hot enough just from burning on the grate that it does not need further calcining. The ash was mixed as is with terracotta and left to set for only 6 hours. It passed the water test without dissolving suggesting a quick setting time.
These experiments have shown how it might be possible to scale up and simplify the production of ash cement. I'm considering it as an alternative to brick making as it's potentially a simpler method (no brick forming, hours stoking the kiln etc.). The structures would have to be adapted to the new material and might be insitu formed walls. More experiments need to be done.
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.
#PrimitiveTechnology #GeopolymerCement #cement
Primitive Technology: One-Way Blower Iron Smelt & Forging Experiment
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I tested the one-way spinning blower in an iron smelt and it is more effective than the previous both way spinning blower. Using the same amount of ore and charcoal, the original blower yielded 30 g of iron where as the new blower yielded 51 g. The previous all time record was 41 g from several years ago but the new blower it beat that by 10 g on its first run. The energy saved by having the fan spin constantly in one direction no doubt contributes to the better performance of the blower. As with the old blower, the new one produces high carbon iron prills (cast iron blobs) in slag. The brittle slag crushes easily while the iron prills remain intact to be picked out by hand or gravity separated with panning. The iron prills were also quite large and more numerous than smelts done with the old blower.
Also in this video is a forging experiment. Using iron from previous smelts, a crude bar of iron was melted together into in a mold. The iron prills were placed in a clay mold, put into a forge and heated with charcoal using a flat nozzle tuyere. The process produced a 8cm long, 2.5cm wide bar. This bar was then heated to a red heat with wood for a while to anneal it, making it malleable in theory. However, when I tried to forge it, it crumbled apart. The waste iron was set aside in a pot for re-smelting so as not to lose it.
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.
#PrimitiveTechnology #IronSmelt #Forging
Primitive Technology: One Way Spinning, Rope Stick Blower
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I made a type of forge blower that spins continuously in one direction only, driven with a simple rope and stick, using a novel technique I developed. The rope, wrapped around the rotor, is pulled down and back via the stick on the power stroke, tightening and causing the rotor to spin clockwise. The stick is then lifted up towards the rotor and pushed forward on the return stroke, loosening the ropes grip around the rotor, allowing it to continue to spin in the same direction due to its momentum. The cycle is then repeated producing uninterrupted, one way, high speed rotation.
Until now the blowers I made intermittently spun clockwise, stopped, and then turned anti clockwise driven either by a stick and rope mechanism or by a string passed over a groove in the top of the rotor (see start of video). Energy was wasted each time the rotation was halted and reversed. This also meant that only symmetrical blower housings could be used, more efficient volute shaped housings could not. But with the new operating technique producing one way rotation, a volute shaped housing was built and tested, working as intended.
The other change to the blower was that it is now mounted vertically rather than laid out horizontally. The rotor is suspended between two upright stakes that have a single hole partly bored into each of them. These hold the ends of the rotor, acting as thrust bearings. This simple frame allows the rotor to spin freely.
The new blower will be used for iron smelting and will be compared with the older blower designs. The potential advantages are better efficiency and ergonomics. Less effort seems to be expended due to the continuous momentum being conserved through each cycle. Also, one hand is left free during use which might be an advantage during forging (i.e. using tongs, adding charcoal etc.). The disadvantage is that it's less portable than the original, the wooden stakes need to be driven into soft ground meaning there's less places it can be used. But this is a negligible issue if the forging area is permanent.
Contents:
00:00 Current blower design (spins both ways)
00:35 Frame for new blower
03:33 Making rope
05:28 Making fan spokes
07:10 Setting up the mechanism
07:35 One way spinning technique
08:33 Fan blades
09:40 Test with old symmetrical housing
14:29 Making new volute shaped housing
21:57 Setting up new housing
23:52 Testing with new housing
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.
#PrimitiveTechnology #ForgeBlower #Pyrotechnics
Primitive Technology: Crab and Fish Trap
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
I made a fish trap from cane and tested it over the course of a year catching various aquatic animals. Initially, I intended catching eels with it but instead it caught fish, crayfish and even a fresh water crab. These were then released back into the wild. This type of trap is made in two parts, a basket and a funnel. The funnel is inserted into the the opening of the basket so that animals venture into the trap easily but have difficulty exiting. The trap requires no bait to work and can be reused over as long as it's intact. The video also shows the huts in the rain season.
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.
#PrimitiveTechnology #crabtrap #fishing
Primitive Technology: Natural Draft Iron Smelt
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
Contents:
00:00 Building the furnace
04:39 Ore
5:28 Charcoal
7:15 Smelt 1 (fresh ore)
11:12 Result/processing product
13:57 Modifying furnace
16:33 Smelt 2 (recycled slag)
20:50 Result/processing product
21:40 Conclusion
About This Video:
I built a natural draft furnace and smelted iron ore in it, producing a small amount of iron. A natural draft furnace is one where the draft is supplied by convection alone. This is opposed to a forced draft where bellows or fan is used to supply air flow instead. Natural draft furnaces are typically taller than forced draft furnaces to make use of the stack effect. They also often have multiple large air entries or tuyeres to help reduce resistance to air flow. Natural draft furnaces where used to smelt iron in ancient times in Europe and up to more recently in Africa where some are still standing. The lack of the need for bellows reduces labor and complexity.
The furnace was 1.5 m tall and 25 cm internal diameter with 4 tuyeres 5 cm internal diameter. Charcoal was used as a fuel and iron bacteria was used as an ore. The smelt produced about 4 g of iron prills but could probably be improved with a longer preheat and a higher charcoal to or ratio. A second smelt was run with slag from previous smelts using 8 tuyeres this time to increase air flow. But it made only about a gram of iron, possibly due to the slag not having much iron left in it.
Natural draft furnaces do not rely on bellows or blowers and so labor is significantly decreased during a smelt. They are also simpler to operate with less components to break down or maintain. However, I've read that they use more charcoal per iron made, possibly because part of the energy from the fuel goes into supplying the air flow through the furnace. With further experimentation, I believe that my natural draft furnaces can make better yields of iron.
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.
#PrimitiveTechnology #Iron Smelt #Draft Furnace
Primitive Technology: Volute Shaped Blower
Subscribe: http://bit.ly/subPT | Never miss a video! Enable ‘ALL’ Notifications!
Watch my newest content: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Follow Primitive Technology:
Wordpress: https://primitivetechnology.wordpress.com/
Patreon: https://patreon.com/user?u=2945881
Watch More Primitive Technology:
Newest Uploads: https://youtube.com/playlist?list=PLGnWLXjIDnpBR4xqf3FO-xFFwE-ucq4Fj&playnext=1&index=2
Pyrotechnology: https://youtube.com/playlist?list=PLGnWLXjIDnpBVRqu5lz5JGaQxjPs7q3CJ&playnext=1&index=2
Shelter: https://youtube.com/playlist?list=PLGnWLXjIDnpBBsdKZb-vy30o88SIxItp2&playnext=1&index=2
Weapons: https://youtube.com/playlist?list=PLGnWLXjIDnpA-XGDrrmVgBnSXx15i2Awp&playnext=1&index=2
Popular Videos: https://youtube.com/playlist?list=PLGnWLXjIDnpAb29Lrdki5BPjTpMon8zla&playnext=1&index=2
About This Video:
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. The previous blower design is tear drop shaped so that the direction that the fan spins is un important. Also with the previous design the impeller spins one way and then the other as it is powered by a simple string mechanism.
In the new design, a weight was employed in the form of a heavy log attached to the rotor. The top of the rotor is held and the weight spun to create rotation. This method produces less rpm than the original but allows the fan to be spun continuously in one direction only. To compensate for the lower rpm, the fan was doubled in size (from 25 cm to 50 cm) to increase blade tip speed and so air speed.
Now with a fan that spins in one direction only, a housing could be used to take advantage of this fact. A volute is an expanding spiral and housing for fans that are volute shaped help guide the air from the center to the outlet more efficiently than a tear drop shaped one. This was made using mud on the ground as opposed to a clay portable one as it was starting to get too big to transport.
The fan was tested in an iron smelt. Disappointingly, it only produced a bit of iron in the form of much smaller prills than usual due to the low rpm and hence air pressure than the original blower. After some rough calculations from research, this design might become competitive with the original blower if the fan diameter was scaled up to 1m diameter from the original 25 cm diameter fan.
The advantage of this design is that it is simpler and has fewer components than the original as there is no string that needs replacing. The dis advantage is that for it to produce good pressure it's diameter needs to be scaled up to the point where it is no longer compact and portable.
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.
#PrimitiveTechnology #volute #fireblower
Get notified instantly when Primitive Technology mentions your brand, topic, or keyword in their videos.
