Even their lack of connectivity can be seen as an asset from a resilience, privacy and security standpoint. Actually using decades-old tech today is challenging, in spite of its apparent simplicity. The friction of physical media-based workflows now feels unacceptable. But much like classic cars can be fitted with an EV motor, it is possible to retrofit older devices in order to make them usable again in a connected world.

Read more: “Practical Retrofitting for Obsolete Devices“, Martin Lafréchoux, LIMITS2025, June 2025. Via Roel Roscam Abbing.

The Ironwood bicycle is a wooden framed bike that people could make themselves with commonly available materials. It has a laminated wooden frame and fork to which standard bicycle components are bolted. The frame can be made with basic carpentry and metalwork skills, without the need for welding or soldering. The design is intended for small scale bicycle production that would support local employment as an alternative to importing bicycles from around the world. More: http://www.ironwoodbicycle.com.

“The electrical system was without a doubt the most daunting task of our DIY camper van conversion. Our goal was to design and build an off-the-grid electrical system that’s safe, reliable, simple, and intuitive (yet no compromises on functionality). After over 4 years of full-time VanLife, we’re happy to report that our system is working flawlessly, nice!”

“Designing and building an electrical system isn’t really straightforward, there are so many concepts to grasp: solar power, alternator charging, shore power, 12 volts, 120 volts, inverter, battery bank, etc. But with our background as engineers and full-time vanlifers, we’re in a good position to make this intimidating task within your reach and help you put the pieces together with the following guide!”

Read more: Electrical System Guide for DIY Van Conversion.

How to Build an Iron Age Village. [YouTube] “In Argüeso (Cantabria) a group of young researchers and artisans recreated in 1999 a Cantabrian town from the Iron Age.” (Thanks to Adriana Parra.)

The Masons of Djenne. [YouTube/National Museum of Natural History, Smithsonian Inst.] “The film captures a unique and very old building technique using handmade masonry, perfected through multiple generations in Djenne, a small town in the West African country of Mali.”

Rammed Earth Construction: A Circular Solution For Sustainable Building. [Latin American Structural Engineering and Construction Conference 2024] “The low level of skill required for rammed earth buildings paves the way for self-built activities.”

Hi Kris,

First of all, congratulations on your wonderful Low-Tech Magazine. I’m telling everyone around me about it.

I love to tinker but I have “two left hands” (I come from a family of intellectuals), so I’m forced to go for the simplest.

After making a very basic pedal-powered washing machine that gives complete satisfaction, I set about making a pedal-powered flour mill a few months ago, as I happen to have a large stock of wheat. I picked up an old exercise bike at the landfill, and coupled it – using an old dryer belt – to an old cast-iron grain mill (the Diamant Grain Mill D525 makes very fine bread flour in a single pass using two grinding stones made of granite) with a few bolts, a wooden board and two wooden beams. The belt is tensioned using very small wooden edges. Everything is easily dismantled in a matter of minutes.

The mill works just fine – it is way easier to pedal than to turn the wheel by hand. The trick is to add the wheat very gradually. You can do this while still on the bike, as shown in the photo. At slow pace, it takes me 15 minutes to obtain 500 grams of very fine flour in a single pass (I tested both wheat and buckwheat). I showed it in the little ‘repair café’ I set up in my village. Like the pedal-powered washing machine, kids love it.

Fun fact: all the males who saw the mill wanted to add improvements to it, tilt the mill, add a gear reduction, etc. The mill was just too simple for them – nothing really impressive there. I replied: “It works just fine the way it is, why would you make it more complicated?” ;- ) I don’t know what could possibly go wrong with this mill, except for the dryer belt maybe – but you can find as many dryer belts as you want for free at the landfill.

My new pedal-powered project is a water pump inspired by the one by MayaPedal. It’s not finished yet. I can’t wait to use it.

Anyway, thanks for all your inspiring articles in a crumbling world. Keep up the tremendous work!
Jean-Baptiste (Vorey-sur-Arzon, Auvergne, France)

“It works only about 2 minutes per hour. At all other times it is perfectly quiet and consumes no power whatsoever. It is obvious that a truly energy efficient fridge does not cost any more money than a mediocre one. It actually costs less. It also has amazing food-preserving performance because temperature fluctuations in its interior are naturally minimized.”

Image: Dr. Tom J. Chalko.

“Comparing the daily energy consumption of various refrigeration devices available on the market reveals that well-designed chest freezers consume less electricity per day than refrigerators of comparable volume, even though freezers maintain much larger interior-exterior temperature difference (their interiors are much cooler). While chest freezers typically have better thermal insulation and larger evaporators than fridges, there is another important reason for their efficiency.”

“Vertical doors in refrigeration devices are inherently inefficient. As soon as we open a vertical fridge door – the cold air escapes, simply because it is heavier than the warmer air in the room. When we open a chest freezer – the cool air stays inside, just because it’s heavy. Any leak or wear in a vertical door seal (no seal is perfect) causes significant loss of refrigerator efficiency. In contrast, even if we leave the chest freezer door wide open, the heavy cool air will still remain inside.”

“The chest-style refrigerator is surprisingly practical and convenient to use. The most frequently used items are placed in top baskets and are very visible and very easily accessible. Baskets slide on top edges of fridge walls so that quick access to deeper sections of the fridge interior is possible without removing any basket.”

Read more and find the manual at Dr. Tom J. Chalko’s website. Thanks to Pablo M.

“This paper investigated a windmill in Nehbandan which is an example of architectural heritage. Harnessing natural energy and using local materials such as stone, wood and adobe, the residents were able to create environmentally friendly structures. In this paper, one of these windmills that is still standing in Nehbandan was selected from a chain of windmills. Then, based on architectural survey, interviewing with millers and sketching, the dimensions of architectural elements and mechanical components were obtained and the windmill was modelled.”

“The results reveal that there is a close relation between architectural features and mechanical components. The orientation of this windmill toward prevailing wind, the correct placement of walls in three faces and creating a hole named Darvazeh in the third wall to direct the wind into the Parkhaneh are architectural features which provide the kinetic energy of the wind to move the mechanical components. The stepped form of the surrounding walls prevents erosion of mechanical components and as a result increases the durability of the windmill.”

Zarrabi, M., Valibeig, N. 3D modelling of an Asbad (Persian windmill): a link between vernacular architecture and mechanical system with a focus on Nehbandan windmill. Herit Sci 9, 108 (2021). https://doi.org/10.1186/s40494-021-00587-0

https://heritagesciencejournal.springeropen.com/articles/10.1186/s40494-021-00587-0

Marie Verdeil made a tutorial for a simple wooden bike trolley. It is available in English and French on the Low Tech Lab wiki.

Method to create a simple bike trolley, using up-cycled materials. Easily fixated to every bike (adult size). Holes on the board help attach any kind of cargo. It’s made out of wood and simple hand tools, no welding required. Dimensions are detailed and can easily be adapted to the material available.

I tried to create a trolley, which can replace the car to go to the market / grocery shopping. No need to transport heavy cargo, but big objects (cardboard boxes, crates, wood, etc.) – Therefore it needs to be easily adaptable, with the option to fix a crate on the board. + Priority goes to second-hand materials!

“This research indicates the technical capabilities of using a 40 cm2 Fresnel lens to heat, melt and vitrify a variety of materials and suggests future applications of this technology including the ability to digitise the process. This material processing technique offers an alternative to heat matter and is significant in geographical locations with ample sunlight, offering a cost-effective option to traditional heating methods and allows directional heating, which local craftspeople can exploit to their creative advantage.”

“A Fresnel lens was proven to be an accessible and affordable tool to heat and melt materials reaching temperatures over 1200 degrees C using
natural sunlight as the energy source. Building on the literature, this solar craft process was proven to melt sand, a variety of glass, metals and burn wood and fabric in a controlled manner.”

“The results from this research reintroduce ancient craft methods and build on the techniques discussed and developed in the works of Kayser (2018) and Jordan (2014), yet solar enamelling on metal is something not seen before, presenting a new area of practice to expand upon… In the sunniest locations on the planet where solar ovens are already used, this practice could be adopted and automated; solar processing technologies could also be integrated into solar farms to process materials.”

“Moreover, whilst this research explored solar craft in outdoor and greenhouse conditions in Scotland, it is also possible to create a safe indoor workspace designed for solar craft practices in a location with consistent, high intensity sunlight, such as Portugal, where there is an indoor solar laser lab, to increase the reliability of this craft method.”

“This study melted materials between 600 and 1200 degrees C which suggests that it may be easier to alter materials at lower melting points. Developing environmentally safe methods to recycle materials like aluminium and plastics through solar concentration may offer alternatives to a discipline which would benefit from innovative solutions that contribute to sustainable development.”

“Expanding this material research to trial using solar concentration to fire locally-sourced clays, preserving wood with ‘shou sugi ban’, a Japanese technique which charrs wood surfaces with fire, and exploring solar lampwork may hold craft potential.”

Read more (open access): Westland, Karen. “Solar Concentration for Craft Practice and Sustainable Development: Fusing Ancient and Modern Methods.” Journal of Jewellery Research 5 (2022): 18-33.

Previously: The bright future of solar powered factories.

“We are humans and might as well get used to it. So far, remotely done power and glory—as via government, big business, formal education, church—has succeeded to the point where gross profits obscure actual loss. In response to this dilemma and to these losses a realm of intimate, community power is developing—power of communities to conduct their own education, find their own inspiration, shape their own environment, and share their knowledge with others. Practices that aid this process are sought and promoted by the DAMAGED EARTH CATALOG.”

–> Damaged Earth Catalog.

• Appropriate Technology
• Benign Computing
• Collapse Informatics
• Degrowth
• Computing within Limits
• Convivial Computing
• Feminist Technology
• Liberatory Technology
• Low-Tech
• Permacomputing
• Small Technology
• Salvage Computing
• To be continued…

Solutions include gravity batteries to provide night-time storage from solar or wind power using the natural phenomenon of gravity in vertiginous regions. The uniqueness of this battery is its ability to be built, installed and maintained by local communities using local materials and techniques and to not rely on any external help or funding. It uses basic physics principles to provide an easily achievable and efficient way to store energy without conventional battery systems.”

Also check out their manifesto and publications.

Historic Zuni waffle gardens, circa 1919. (Photo courtesy of Kirk Bemis)

For the past 64 years, Jim Enote has planted a waffle garden, sunken garden beds enclosed by clay-heavy walls that he learned to build from his grandmother. This year, he planted onions and chiles, which he waters from a nearby stream. It’s an Indigenous farming tradition suited for the semi-arid, high-altitude desert of the Zuni Pueblo in New Mexico, where waffle gardens have long flourished and Enote has farmed since childhood.

“They are the inverse of raised beds, and for an area where it is more arid, they’re actually very efficient at conserving water,” said Enote, who leads the Colorado Plateau Foundation to protect Indigenous land, traditions, and water. Each interior cell of the waffle covers about a square foot of land, just below ground-level, and the raised, mounded earthen walls are designed to help keep moisture in the soil.

Read more: The Resurgence of Waffle Gardens Is Helping Indigenous Farmers Grow Food with Less Water, Greta Moran, Civil Eats, October 2021.

In view of the global resource and ecological situation, per-capita resource consumption rates in the rich world probably need to be reduced by 90%. This can only be done if there is a “de-growth” transition to some kind of Simpler Way centered on mostly small, highly self-sufficient and self-governing communities in control of local economies within a culture that is not focused on material wealth.

It is not surprising that the viability of such a vision is typically regarded as implausible. The aim of this study is to show that normal outer city suburbs could be restructured along the lines required to cut global impacts by the necessary amount, while improving the quality of life. Data on typical Australian consumption rates, food production yields, suburban geographies, etc. is used to estimate the achievable reductions.

The theoretical conclusion that such reductions could be made aligns with a study of the Dancing Rabbit Eco-village in northeast Missouri. Heavy cuts in resource consumption cannot be made without extreme change in economic, political, settlement and cultural systems.

The hundred rabbits research lab does experiments on resilience and self-reliance through low-tech solutions. The two-headed team practice what they preach: the lab is located on a small sailboat that has been traveling across the oceans since 2016. Among other things, their website contains a lot of practical information for those who want to go off-the-grid, whether it is on land or on water. Because they run a design studio and create free and open source software, there’s also sound advice on how to work off-the-grid efficiently.

“Of all the questions I get on Twitter the most common is this: ‘How do you build a town?’ We know well how it used to be done, but these last one or two centuries we have forgotten how to do it (with only a handful of notable exceptions during the last century).

The other day I was asked again, but this time with a set of premises that made the question a little easier to approach. I have anonymized all the details but the general idea remains: four guys (friends) with money have bought a suitably large piece of land in Texas and now want to create a car-free human-scaled town of the kind that I am always writing about.

In this text I intend to set out the most bare-bone basic premises for how to start a good town, what is needed to build something anti-fragile and sustainable under the above mentioned scenario.”

Read more: How to Build a Small Town in Texas, Wrath of Gnon, July 2021.

To create a human scaled town we first establish what is a good size, and this is simply one third of a square kilometer, or 82 acres, or 0.13 square miles. 80 acres was the upper limit for a good family farm in medieval England, and it is still the size at which the most flexible and efficient farms run, both modern and more old fashioned Amish family farms. It allows a town where no point can’t be reached on foot in 15 minutes, and it allows comfortable living for a population of 3000, which was considered the ideal size in medieval Europe: the upper limit of efficiency and comfort, productivity and harmony: more and you get crowded, less and you risk being without some important trades and activities. Even though the premise talks about a town of 600, we plan three centuries ahead for a maximum population of ca. 3000.

A good town (the urban) is clearly defined and set apart from the countryside (the rural). The suburban has no place here. Hence the town needs to be as clearly marked out and defined as the individual family lots will be: to here, but no further. For this purpose we will mark out land to be used as a wall, raised embankment, hedge, fence, moat, canal, etc. Some sort of edge which is not routinely nor distractedly crossed.

As for shape, I recommend a somewhat irregularly oval shape, near round in one extreme, or rice grain shaped in the other extreme, for the simple reason that the best towns and cities seems to be oval to some degree. As far as possible the existing topography should be kept or even enhanced. Perfectly flat land is only popular with boring developers. So: no bulldozing allowed. Existing trees should be left and existing paths should be left in place (even when slightly inconvenient). New paths and streets should follow the contours of the land. Anything historic (an old campsite, an ancient grave or remains of an old farmstead) should be kept and protected and venerated. History is in short supply in new developments, and interesting stories can be woven around something as mundane as an abandoned old cart or well.

Read the whole article: How to Build a Small Town in Texas, Wrath of Gnon, July 2021.

The Galaksija computer was a craze in 1980s Yugoslavia, inspiring thousands of people to build versions in their own homes. The idea behind them was simple – to make technology available to everyone. Free play was implicitly encouraged: the sharing, collaboration, manipulation, and proliferation of software was built into Galaksija’s very operation.

A computing enthusiast since 1979, Zoran Modli caught wind of Galaksija after the publication of Computers in Your Home. As host and DJ of Ventilator 202—a renowned New Wave radio show on Serbia’s Radio Beograd 202—Modli was something of a minor celebrity in Yugoslavia. Because all the day’s computers, including Galaksija, ran their programs on cassette, Regasek thought Modli might broadcast programs over the airwaves as audio during his show. The idea was that listeners could tape the programs off their receivers as they were broadcast, then load them into their personal machines.

An overnight sensation, this DJing practice quickly became a staple on Modli’s show. In the ensuing months, Ventilator 202 broadcast hundreds of computer programs. During the hour, Modli would announce when the segment was approaching, signaling to his listeners that it was time for them to fetch their equipment, cue up a tape, and get ready to hit record. In the case of games, users would “download” the programs off the radio and alter them—inserting their own levels, challenges, and characters—then send them back to Modli for retransmission. In effect, this was file transfer well before the advent of the World Wide Web, a pre-internet pirating protocol.

Read more: Socialism’s DIY Computer, Michael Eby, Tribune, July 2020. Thanks to m.

Mathieu Maury sends us a link to a very interesting (and minimalist) website called Simplifier. From the about-page:

Why do I simplify? How did I get started? What is the goal of this website?

Before developing any other skill, I enjoyed programming. To some extent, I still do; each program is its own universe, built from scratch, and the ability to create these on a whim is fascinating. However, the more time I spent programming, the more I became aware of the fact that software depends on hardware, and hardware is constantly changing. A program is not like a book or a painting; it requires constant upkeep and adaptation to remain in existence.

Initially, this drove me to learn about hardware, so that I could develop a stable platform to build upon; but this too was futile. Components inevitably fail, and there is no guarantee that replacements will be available in the coming years or decades. Essentially, permanent work cannot be achieved on a computer, as the hardware is fundamentally out of the control of the user. No matter what world is created inside of a program, its foundation will always rest on sand.

At this point I left programming entirely, and began searching for other meaningful work to do; but the problem had followed me! No matter what skill I intended to learn, I found that its permanence had been eroded by the chaos of technology. Materials were replaced by brands, techniques replaced by accessories, and craftsmanship replaced by consumerism. Clearly, this was something that needed to be fixed. Clearly, this is what I had to do.

Fundamentally, my work here is about creating a stable foundation of technology that is reliable, understandable, and practical for an individual to build for themselves. As of writing this, I believe I have done this on a conceptual level, but I intend to continue this work to the highest level of technology that I can achieve on my own. I encourage readers to utilize anything here which they find practical for whatever purpose they see fit, and to consider adopting a mindset of simplification in projects of their own.