Making PCBs at Home Photographically (Part 2 of 2)

Ashok Kumar Singh is a senior IT professional. He has authored books for IBM, USA and takes keen interest in electronics and amateur radio

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Aligning for 26-pin DIL header block
Fig. 34: Aligning for 26-pin DIL header block
26-pin header block
Fig. 35: 26-pin header block

Release the vice, remove the two pieces of the wire and release the two PCBs. Now place the 26-pin header in the holes just drilled. It should fit perfectly.

Drill all the required holes for the PCB. When done, carefully use very fine sand paper to smoothen the copper side of the PCB. Do not rub too much as the copper pads or tracks may get damaged.

The diagonally opposite component pads
Fig. 36: The diagonally opposite component pads

Copper starts oxidising fast. So if you wish to store the PCB for a while, place it in a plastic zipper bag after applying transparent lacquer spray on the copper side. Before use, just wipe the lacquer with nail polish remover.


 

1 COMMENT

  1. Why all of you making this articles just don ‘t ever finish it ? All of you explain how to make the pcb and how to drill… but most important thing like final art of soldermask , the final look lasting for years…dead subject. How and where to choose materials from so many variants and sellers that sucks …dead subject. But full of articles how to make holes with a drill. Nice.
    At every new article about making PCB at home I go to the last page looking for final chapter- How to really do at home the solder mask. Disappointed, always MISSING.

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