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Multifunctional Crankset

A bicycle crankset that can power multiple tools such as a blender, a drill press, a sewing machine or even an electric generator.

• Medium
• 2 day(s)

200W Wind Turbine

The hand-crafted 200W, 4 ft wingspan Piggott wind turbine.

• Hard
• 20 day(s)

Bio-Coal

Making coal briquettes with carbonised agricultural waste.

• Medium
• 4 day(s)

Solar Oven (box-type oven)

Box or a parable shaped, the solar oven makes it possible to cook your food using the sun rays.

• Easy
• 1 day(s)

Solar air heater

Solar air heater, adaptable to any type of house, by Guy Isabel.

• Medium
• 2 day(s)

Phyto-Purification of Wastewater

Ecological Sanitation of Wastewater

• Medium
• 8 day(s)

Wooden bicycle trailer

Two-wheel wooden trailer for transporting 2m50 objects.

• Medium
• 1 day(s)

Filtre à eau céramique

A ceramic water filter is a system for purifying unsanitary water. This tutorial aims to show how a ceramic water filter works and how to build one on a semi-industrial scale.

• Hard
• 3 day(s)

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