electric sanding pen
myminifactory
2021/8/5 I designed a simple and new reciprocation linear accessory that converts rotational motion to linear motion. It can save a lot of space. Using this concept I designed an electric sanding pen with a mini DC motor. You can use it polish something or trimmer your nail very easily. Hope you will like it. https://youtu.be/9kFvqdotRTk
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