2 Amazing ideas from DC Motor HD

（Materials required） NO.1 How to Make a Bench Grinder DIY polisher Grinding wheel connecting rod Aperture8mm 砂轮连接杆孔8mm Grinding Wheel砂轮 https://goo.gl/2XtHBi M10 Arbor Mandrel Adaptor 8mm Shank M10锯片连接杆孔8mm https://goo.gl/ih6Lms https://goo.gl/caHRJd Buffing Polishing Wheel 75mm 棉布抛光轮 https://goo.gl/jsCLHd Bearing seat*2 8mm轴承座 https://goo.gl/YASybF 115mmX8mm Linear Shaft 钢轴115mmX8mm https://goo.gl/QtLT7E XL Timing Pulley 20Teeth 8mm *1 10Teeth *1 Bore5mm XL同步轮20齿 10齿 孔8mm https://goo.gl/GvWKoB 100XL Timing Belt 100XL同步带https://goo.gl/nPtwjg 775 motor 775马达https://goo.gl/qeypgW 775motor Mounting Base 775马达支架https://goo.gl/X64Bmp board 24V5A Power Adapter 调压电源https://goo.gl/Ez59q7 NO.2 How To Make PCB Circuit board Cutting Machine 480Motor 马达 http://bit.ly/2GvKd7p 12V10A power supply 电源 http://bit.ly/2JCosqn board木板260mm*200mm*10mm。80mm*40mm*10mm。150mm*10mm*10mm。45mm*20mm*6mm*2。 Junction Case接线盒80mm*50mm*30mm http://bit.ly/2HLwnOI Optical Axis钢轴200mm*4mm Telescopic Antenna 拉杆天线http://bit.ly/2M8HGGh 50mm Diamond Cutting Discs 金刚石切割片 http://bit.ly/2QldiH6 3mm Drill Chuck 3.17 钻头夹 http://bit.ly/2QjrX5G M3*20 screw 螺丝钉 PWM Speed Controller 调速模块http://bit.ly/2YOWpHX KCD-101 Rocker Switch船型开关 http://bit.ly/2GbKix1 Thanks for watching！