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| 海外の方のチャンネルです。「原始生活」がコンセプトです。森にあるもので藁葺きの住居を作ったり、日用雑貨品を揃えたり、時には武器や食料も自然の中のものから作り出します。火起こしのような技術も紹介されています。 |
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Primitive Technology: Grass mat loom
Primitive Technology: Grass mat loom
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About This Video:
I made a loom for weaving grass mats on for the purpose of testing grass mats as roofing material for shelters. This is also known as a camp loom. Regular thatch is good for a stationary hut but is not portable. But a mat can be easily placed on a shelter roof to provide cover and then can be rolled up and taken to a new site like a tent. I cut grass about 1 m long and carried it to the site. There I set up a loom 3m long and 75 cm wide by hammering in 2 stakes into the ground and used vine as the string. Grass was then passed between the warp and weft strings as a crossbar was lifted and dropped. Th mat was then tied off at the ends when finished and could be rolled up and carried away. Two 2.5 m mats were made this way. A quick shed was made and the mats were used to cover the roof. The mats were placed on so water would run from one to the other. There were gaps in the grass which presented a problem. So I simply doubled the mats up by folding them in half. When laid on 2 layers thick the mats did shed water. The method does produce water proof mats quickly ( about 30 minutes per mat) but they need to be laid on two layers thick to be waterproof.
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 #grass #outdoors -
Primitive Technology: Floating Pulley Blower Smelt
Floating Pulley Blower Smelt
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About This Video:
I tested the floating pulley blower I made last time in an iron smelt. I started by re-building the blower housing from the last project which had broken after getting wet. Then I set up the blower and tested a fixed pulley wheel that was held in place with a different configuration to the pulley wheels from the last project, where the pulley was outside of 2 stakes as opposed to between to stakes, in order to allow a crank handle to be attached directly to the wheel instead of to the rotor. But it had issues with durability so I decided to test the "floating" pulley wheel method I developed last time where the pulley has 2 handles and is held in the hands only with no support frame, spokes or hub of the fixed wheel design. The great reduction in parts makes it simpler and less likely to fail. It worked satisfactorily pushing about the same air as the "one way spinning rope stick blower" method and the "2 way spinning blower method" but with more even air flow. It gave a slightly above average yield of 21 g of cast iron prills from 1200g of ore as opposed to the normal 15 g from 1200g. This is despite the wood preheat phase of the furnace only being 25 minutes as opposed to 1 hour, preheating the furnace may be important to get the furnace to temperature before adding the charcoal and in future I'll do it for longer. Using the floating wheel isn't as tiring as I thought it might be and is comparable to the rope stick method and is much easier than the 2 way spinning method where a rope has to pulled outwards with two hands repeatedly. It is currently a good competitor to the rope stick method. However, if I want to scale up the wheel size and consequently rpm of the fan, I'll need to revisit the fixed wheel design as the floating wheel won't scale up. Overall, I see this method as a stepping stone to a better blower and better smelts in future.
00:00-05:18 New blower housing
05:18-06:51 Set up blower and furnace
06:51-08:50 Banana fibre belt & splicing
08:50-10:14 Little clay pulleys
10:14-11:33 Testing a fixed pulley design
11:33- 12:29 Making and testing floating pulley design
12:29-14:09 Replace clay pulleys with fibre wrapped rotor/test
14:09- 14:37 Smelt preparations
14:37- 17:39 Smelt
17:39- 19:09 Process bloom
19:09- 19:48 Result
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 #1 #2 -
Primitive Technology: Belt and pulley blower
Belt and pulley blower
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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 belt and pulley drive to power a blower. Up until now I had been using a rope and stick to spin the fan rotor of the blower. Though this was useable and produced continuous one way rotation, it was unable to reach higher revolutions per minute due to limitations of the drive mechanism. As a result, only low pressure air flow was attainable. This is enough to smelt iron ore to produce a bloom. But it is not solid, with the result being slag with high carbon steel or cast iron droplets instead of a large solid bloom of low carbon iron. A pulley and belt produces continuous rotation and can be geared up with different pulley sizes to produce greater rpm.
I first made a large clay wheel to be cranked by hand and a small one to drive the fan. It worked but had issues due to weight wasn't durable. The small clay wheel worked ok though. The next test was of a cane wheel made by weaving a basket without a base so if formed a cylinder for the belt to wrap around. This worked better and was faster. It sometimes has issues with the frame it's set in though. The final test was with a "floating" version of the cane wheel meaning that it wasn't set in a frame but had 2 handles and was spun while holding with 2 hands. This worked with fewer issues but would not be scalable.
All of the wheels in the video where 25 cm in diameter and gave a ratio of about 1:10 (one hand turn = 10 fan turns). The previous rope stick blower gives about 960 rpm whereas the the pulley and belt might give 1200 if cranked twice per second, though this may be exceeding its limits of durability. A larger diameter wheel of say 50 cm will give 1:20 ratios. Future experiments will need to be done to see if they make a difference to smelting results.
00:00-14:05 Making the parts
14:05-17:34 Clay pulley wheel
17:34-24:54 Cane pulley wheel
24:54-27:48 "Floating" pulley wheel (not fixed to a frame)
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 #blowers #fire -
Primitive Technology: Charcoal retort experiment
Charcoal retort experiment
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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 charcoal retort based on the Hookway retort method using only primitive materials. A normal retort is one in which the sealed chamber of wood is inside a furnace and the heat drives off the volatiles converting it to charcoal. The Hookway retort, invented by James Hookway (see original video: https://www.youtube.com/watch?v=fBYaP5K0AkE ) has furnace, a metal pipe, inside the sealed chamber of wood, so the heat conducts out into the wood converting it to charcoal. In addition to this, escaping volatiles from the wood enter the pipe where they are burnt, adding further heat. After a while, no more wood is added to the furnace as it runs entirely of wood gas.
In my version I made a clay pipe and tested it. It did produce some charcoal but most of the wood remained unburnt. This was due to the poor heat conductivity of the clay pipe relative to the metal pipe of the original. The charcoal it did produce from wood touching the clay pipe directly, was of excellent quality. Another benefit of the design was it did not need sealing of the air entries like a typical charcoal mount. The retort did not become self sustaining on woodgas and needed to be fed with wood for the duration of the burn.
In future I'd try making charcoal in a large clay pot retort inside a furnace. I've done it in a previous video with a 25 cm diameter x 25 cm tall pot and it worked well producing shiny intact charcoal with the only unburnt wood at the bottom of the pot. For a new version I'd make the pot taller but not wider for greater yields. Or I'd simply make charcoal in a pit doused with water which gives poorer quality charcoal but with less time and effort. I've tested doused charcoal before in iron smelting and it seems to give the same yield of iron.
00:00-04:36 Regular charcoal mound
04:36-16:33 Hookway charcoal retort
16:33-19:14 Doused charcoal method
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 #experiment #survival
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