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WOFATI, an acronym for Woodland Oehler Freaky-cheap Annualized Thermal Inertia, represents an innovative approach to sustainable building, coined by permaculture expert Paul Wheaton. This building technique combines the affordability and simplicity of Mike Oehler’s earth-sheltered designs with Wheaton's focus on cost reduction and integration with the natural environment. WOFATI structures prioritize the use of readily available, natural materials, such as wood and earth, minimizing reliance on manufactured products and reducing the building's environmental footprint. Annualized Thermal Inertia, a key principle of WOFATI, utilizes the surrounding earth as a thermal mass, storing heat in the summer to warm the building during winter and retaining cool temperatures from winter to moderate summer heat, thereby minimizing energy consumption for heating and cooling. WOFATI designs typically feature large windows on the uphill side to maximize passive solar gain, further reducing energy needs. WOFATIs are intended to be situated on or near a woodland, embracing the concept of harmonious integration with nature. Notable examples of WOFATI structures, including Allerton Abbey and Wofati 0.8, can be found at Wheaton Labs in Montana.

Hugelkultur, is a permaculture garden bed technique where wood is buried under the soil. It can be built in a variety of shapes and sizes, and can be used for growing a variety of "garden plants". The decomposing wood acts "like a sponge to hold water", making hugelkultur ideal for areas that receive little rainfall. Over time, the wood shrinks and creates air pockets, resulting in a self-tilling garden bed. This "soil on wood" technique helps to retain moisture and nutrients in the soil, which benefits the plants. Hugelkultur is an environmentally sustainable gardening technique because it uses wood that might otherwise be discarded.

The berm shed is more than just a simple storage structure; its construction incorporates advanced techniques that prioritize sustainability, durability, and integration with the natural environment. Earthworks play a crucial role, as careful shaping of the landscape is required to create the berm that covers a portion of the shed's sloping roof. This berm acts as a natural insulator and thermal mass, helping to regulate temperature inside the structure. The "attic" cell design, as discussed in source, involves a specific configuration at the termination ends of the berm shed, further enhancing its thermal efficiency. Round wood timber framing, a technique using logs instead of dimensional lumber, is often employed, lending structural strength and a rustic aesthetic. A key consideration is the long-term durability of the wood in contact with soil. Source emphasizes the importance of peeling the bark from posts before burial to reduce the probability of rot, highlighting the evolution of construction techniques for increased longevity. Additionally, using gravel in post holes, as described in source, helps with drainage and further protects the wood from moisture. These advanced concepts, when combined, result in a berm shed that is not only functional and visually appealing but also a testament to sustainable building practices deeply rooted in permaculture principles.

The lorena is a unique cooktop design created to optimize the performance of rocket stoves. This specialized cooktop features a metal plate with a central hole that sits directly above the rocket stove's burn chamber, allowing for direct heat transfer to large pots. The surrounding metal plate serves as an additional cooking surface, similar to the glass cooktop used at Allerton Abbey, offering flexibility for a range of cooking tasks. This design aims to maximize heat utilization from the rocket stove, promoting energy efficiency and faster cooking times. When a large pot is heated to the desired temperature, it can be moved to the surrounding cooktop, and the central hole can be covered with a piece of metal to retain heat. Proposed implementations often include integrating the lorena into an outdoor kitchen setting for added practicality. The lorena embodies the ongoing innovation within rocket stove technology, striving for better heat transfer and improved cooking performance.

The willow feeder system is a sustainable and "freaky-cheap" method of managing human waste, developed by permaculture innovator Paul Wheaton as an alternative to traditional septic systems and sewage treatment plants. This innovative system transforms human waste into a nutrient-rich fertilizer, called "willow candy," through a process of mummification. Instead of composting the waste, as in composting toilets, the willow feeder system relies on a dry environment within sealed garbage cans to prevent decomposition and the survival of pathogens. A small amount of sawdust is added to the cans, primarily for aesthetics. After two years of aging, the "willow candy" becomes pathogen-free and can be safely used as fertilizer. This material, rich in carbon and nitrogen, is particularly beneficial for "poop beasts," a term used to describe trees like willow, cottonwood, poplar, and bamboo, which can tolerate and thrive on the high nutrient levels. By turning human waste into a valuable resource for growing these beneficial plants, the willow feeder system embodies the core principles of permaculture, promoting a closed-loop cycle that minimizes waste and environmental impact.