ネジのタップ建て(4mm) tapping 4mm screw hole |
ネジのタップ建て(5mm )tapping 5mm screw hole |
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Gluing horizontal pendulum(Part1) | Gluing horizontal pendulum(Part1) |
http://yossi-okamoto.net/Electronics/Making_circuit_board.html | http://www.yossi-okamoto.net/Outsourcing/Amplifier.html |