Development of an Improved Cassava Grating Machine for Rural Processors

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Cassava grating is a critical processing operation but existing machines pose safety hazards. This project developed an improved cassava grating machine with enhanced safety features. Design improvements included a hopper with pusher mechanism, safety guard, and emergency stop. The grating drum (250mm diameter) was mounted on a 2HP electric motor. Performance evaluation showed grating efficiency of 95%, throughput of 350 kg/hour, and moisture loss of 8%. No hand injuries occurred during extended testing due to the safety features. Power consumption was 1.5 kWh per ton of cassava. Fabrication cost was N180,000. The machine is suitable for small and medium-scale processors. Recommendations include developing a motorized pusher for reduced operator fatigue.