Etching process begin with schematic diagram drawing..
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| EMG circuit diagram |
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| PCB copper drawing |
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| PCB copper drawing with holes |
PCB copper drawing sheet attached and transfer to copper side of PCB by using ironing technique.
After that, the circuit connection on the copper side need to be check before the etching process begin. This is to make sure that there is no break connection on the copper side.
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| PCB circuit etching using Ferum Cloride |
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