Homemade mini grinding machine from PVC plastic

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The homemade grinding machine is made of PVC plastic and 775 12v motor, the motor rotation speed reaches 18000 rpm. Combined with a set of 20-tooth and 40-tooth pulleys, ratio 1:2, helps reduce the motor rotation speed to 9000 rpm, while increasing the torque by two times, helping the grinder operate strongly and stably.
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Видео Homemade mini grinding machine from PVC plastic канала Quang Minh Selfconstruct