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The willow feeder system is a permaculture solution for managing human waste, developed by Paul Wheaton, that prioritizes safety, sustainability, and nutrient cycling. It is designed to be a "freaky-cheap" alternative to conventional septic systems and sewage treatment plants, utilizing readily available materials like garbage cans and sawdust. The system focuses on mummifying human waste in a dry environment within sealed garbage cans to prevent composting and the escape of pathogens. This dry environment also stops the loss of valuable carbon and nitrogen to the atmosphere, which is a common issue with hot composting. After two years of aging in the sealed cans, the resulting "willow candy" is pathogen-free and can be safely applied as fertilizer. While this nutrient-rich material could be used on any garden, it is best suited for "poop beasts" like willow, cottonwood, poplar, and bamboo, which can readily absorb the high nutrient content without harm. This system promotes a closed-loop approach, turning what is often considered waste into a valuable resource for growing beneficial plants.

Cast iron cookware can last hundreds of years while some other cookware needs to be replaced every 6 months. Cast iron is the true non-stick pan. When the surface is coated with a dab of oil or fat of your choice, eggs will slide freely.

Beyond the foundational elements of WOFATI design, there are advanced concepts that further enhance its effectiveness and versatility. The strategic placement and sizing of windows on the uphill side, for instance, are crucial for optimizing passive solar gain and regulating temperature. The design of the "two-skin" system, incorporating a double layer of membrane, demands careful consideration of materials and installation techniques to ensure long-term dryness and durability. The integration of WOFATI principles with other sustainable technologies, such as rocket mass heaters, offers the potential for a highly efficient and self-sufficient dwelling. The concept of WOFATI extends beyond just houses; variations such as WOFATI coolers and freezers, utilizing specialized venting systems and expanded thermal mass, showcase the adaptability of this approach to address various needs. Furthermore, WOFATI principles can be applied to animal shelters, with specific modifications to accommodate larger spaces and functionality. The ongoing development and experimentation at Wheaton Labs, as seen in projects like Allerton Abbey and Wofati 0.8, continue to push the boundaries of WOFATI design and its potential for sustainable living.

WOFATI structures are characterized by a thoughtful design that prioritizes passive systems and natural, locally sourced materials. The "two-skin" system, composed of a double layer of polyethylene membrane, encapsulates the earthen roof, providing a durable and waterproof barrier. The lower layer hugs the structure, while the upper layer defines the thermal mass surrounding it, with at least eight inches of dirt between the layers and sixteen inches on top. WOFATI designs emphasize a harmonious integration with the surrounding woodland, incorporating the "soil on wood" building technique. This method eliminates the need for a conventional concrete foundation, making construction faster and more affordable. A distinctive feature of WOFATI houses is the large gable roof on the downhill side, often incorporating glazing to allow light penetration, while at least 35% of the uphill wall features windows for optimal passive solar gain. This strategic placement and sizing of windows is crucial for maximizing natural light and regulating internal temperature, contributing to the effectiveness of Annualized Thermal Inertia.

Hugelkultur, meaning "hill culture," is a sustainable permaculture gardening method that uses buried wood to create raised garden beds. This technique involves layering logs, branches, and other woody debris at the base of the bed and covering them with soil. As the wood decomposes, it acts as a sponge, retaining moisture, improving aeration and drainage, and releasing nutrients, reducing the need for watering and fertilizers. Hugelkultur beds are ideal for growing various plants, especially those that prefer well-drained soil. By harnessing the natural process of decomposition, hugelkultur promotes a thriving garden ecosystem and aligns with permaculture's goal of sustainable systems.