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in sustainability, appropriate technology and poverty reduction.

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Windmillprint-crop.jpg Yes it is possible to print a windmill with a 3D printer for a fraction of the cost of manufacturing one conventionaly. Learn more about open-source 3-D printing of open source appropriate technology for sustainable development.


Small Scale Vegetable Oil Extraction
Small Scale Vegetable Oil Extraction. Oilseeds are the major source of edible oils. The oil-cake remaining after the greater part of the oil has been extracted is a valuable source of protein for animal feeds. Nutritionally, oils provide the calories, vitamins, and essential fatty acids in the human diet in an easily digested form. Oils are used in cooking to enhance the flavour and texture of food. It has been estimated that while 30% of malnourished children in developing countries suffer from a lack of both energy-producing and protein foods, the other 70% suffer from a lack of calories which could be obtained largely from oils and fats. The per caput consumption of fats in tropical Africa is roughly one-quarter of that in North America. Only a small number of developing countries have surpluses of vegetable oils for export. Malaysia and Indonesia export palm oil, the Philippines export coconut oil, and Brazil and Argentina export soy-bean oil. In most developing countries, vegetable oils are in short supply with the rising demand due largely to population growth. The need to import uses up scarce foreign exchange.
Ersson rainwater harvest and purification (original)

Rainwater catchment and purification system, at less than $1500, for the majority of household use.

Buckminster Fuller
All of humanity now has the option to "make it" successfully and sustainably, by virtue of our having minds, discovering principles and being able to employ these principles to do more with less.

Bicycle wheel
Transport. According to the Appropriate transport manual, sustainable transportation is a strategy for the flow of people and goods across the Earth that meets the needs of the present without compromising the ability of future generations to meet their own needs. Transportation accounted for 32.6% of US green house gas emissions in 2005. In addition to the widely publicized environmental consequences of driving automobiles, it is also socially and economically costly:
  • Land use: Parking and roads use valuable land resources.
  • Transportation equity: Driving, with all of its expenses, costs the average U.S. household $7,000 per year per vehicle.
  • Economics: Most of the money spent on driving leaves a local economy, weakening it.
  • Community: Travelers outside of their cars interact more with their physical environment and each other.
  • Safety: The presence of pedestrians and cyclists make our neighborhoods safer from crime. Conversely, 42,000 Americans are killed in car accidents every year.
  • Health: Increasingly, Americans are suffering from weight-related illnesses. This is partly attributable to the decline in active transportation use and availability.

Building and encouraging alternatives to the single-occupant vehicle, or, for short "alternative transportation," is imperative. Some alternative transportation advocates have taken to using the term, sustainable transportation, instead of the previous, widely-used "alternative transportation" term to avoid sidelining their interest from the mainstream.

Many efficient, practical, and inexpensive sustainable transportation technologies already exist, meaning activism, policy work, and planning research is most often more crucial to developing sustainable transportation than technology development.

edit  watch  Selected service learning Projects gallery (refresh)

Engr305 Appropriate Technology Projects: Below are selected service learning projects from Engr305 Appropriate Technology, which is a course on appropriate technology at Humboldt State University taught by instructor Lonny Grafman.

CCAT Clay-straw slip wall

Clay-straw slip wall of CCAT's Greenshed  
CCAT clothes drying

Efficient clothes drying system for CCAT  
CCAT Cold Box

An energy efficient solution to a refrigerator  
CCAT Compost System

CCAT's comprehensive composting system  
CCAT greenhouse natural wall

An aesthetically pleasing natural earthen wall built by clay and straw slip methods  
CCAT greenshed cob wall

Cob wall of CCAT's Greenshed  
CCAT greenshed north wall

Cordwood and mortar wall of CCAT's Greenshed  
CCAT greenshed west wall

Clay-straw slip wall of CCAT's Greenshed  
CCAT greywater marsh (2008)

CCAT's Greywater Marsh 2008  
CCAT greywater marsh (current)

CCAT Greywater Marsh Continued  
CCAT interpretive wind turbine display

Demonstration wind turbine  
CCAT's living roof

Replacing CCAT's living roof  
CCAT MEOW 2012

Refurbishment of CCAT's Mobile Energy Operation Wagon  
CCAT natural concrete stain

Natural concrete stain  
CCAT natural paint project

Interior paints from natural ingredients  
CCAT natural wall construction

Earthen informational kiosk for CCAT  
CCAT pedal powered grain mill

Pedal powered grain mill for CCAT  
CCAT pedal powered TV

Updated version of CCAT pedal powered bicycle  
CCAT rainwater catchment system

CCAT's current rainwater catchment system  
CCAT Raised Garden Beds

Controlled beds of soil above toxic ground  
CCAT remediation zone

A stable slope for planting and attracting beneficial insects  
CCAT Retaining Wall

Retaining wall for slope erosion at CCAT  
CCAT rocket stove

CCAT's improved fuel rocket stove  
CCAT small rainwater catchment

Rainwater catchment for CCAT's cob bench roof  
CCAT's Vermicomposting Bin

CCAT's vermicomposting bin  

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New pages being developed:
  1. The Haus of Greenery
  2. Cost of bicycle parts
  3. Newspaper Briquette Maker
  4. Black Mamba Bike pedal
  5. Clamps: "Wooden" Handscrew Style
  6. OSAT Wind Turbine
  7. Chicken Feed Holder
  8. Clamps with Gearing Systems
  9. Bike rack
  10. Contoured Spigot for 5-gallon buckets

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