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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)

Micro gasifier stove

Build an economical and transportable wood cooking system.

• Very easy
• 1 hour(s)

Desert fridge

Make a refrigerator that works without electricity!

• Very easy
• 2 hour(s)

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