Design, Fabrication and Performance Evaluation of a Low Cost Peanut Butter Making Machine for Small-Scale Entrepreneurs

This work focuses on the design, fabrication and performance testing of a manually operated machine for making peanut butter. The machine comprises a specifically designed grinding plate to reduce the escaping of the unprocessed groundnuts and a transmission mechanism which greatly reduces the required effort to operate the machine. The machine has average grinding efficiency of 83.1%. It is also easy to operate by both genders and has the average capacity of 7.71 kg/h. With this capacity, the machine can be used both in household and also in small-scale entrepreneurship for processing peanut butter from roasted groundnut seeds.