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Step 3Making Circuit Board
1. Clear the copper side of the board from oxides with sandpaper.
2. Put the both sides of printed circuit on the board and fix them with paper tape.
3. Put the board between some pieces of paper and press the hot iron (without steam) on it for a while. (BE CAREFUL: The hot iron may lead to firing of papers)
4. Remove the printed circuit of the board.
5. Soak board in a bowl of circuit board acid and wait till all the visible copper disappears. (BE CAREFUL: You are working with acid)
6. Wash the board and clear it with sandpaper.
7. Make holes with 1mm drill.
2. Put the both sides of printed circuit on the board and fix them with paper tape.
3. Put the board between some pieces of paper and press the hot iron (without steam) on it for a while. (BE CAREFUL: The hot iron may lead to firing of papers)
4. Remove the printed circuit of the board.
5. Soak board in a bowl of circuit board acid and wait till all the visible copper disappears. (BE CAREFUL: You are working with acid)
6. Wash the board and clear it with sandpaper.
7. Make holes with 1mm drill.
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