Translations:Torréfacteur solaire de café/7/en

Roaster:

• Cement mixer,
• Black painting,
• Aluminum sheets,
• Isolating material (fiberglass, rock wool, foam,..)

Parabola:

• Stainless steel or aluminum bars,
• Metal frame, sheets of metal,
• Wires

Mechanical par:

• Belt or chain,

Gars (toothed wheels),

• Handle or motor or water wheel