Detailed description http://www.instructables.com/id/3d-Printed-Grass-Cutter-Trimmer/ Trimmer working with nylon trimmer line but for it need more powerful motor and different wire connector for more current. I think a motor RS-550 20000 RPM from old cordless drill will be nice. Parts: 3x 3d printed parts (2 for head and 1 for button box) 2x M3x8 screw 2x M3x15 screw 1x M3x18 screw 2x M3 wide washers 5x M3 nuts Some nylon trimmer line dia. 2-3 mm