I made a PCB that I am happy with (it works!). This is for a power circuit, and I have realized (way too late) that I want a switch on the board as well. I bought a switch from a hardware store that seems to be ok for the purpose.
I have the location of the thick VCC trace where I want the switch identified, and I think I can drill two slots using a small drill. The only problem that remains is the copper trace between the two slots. I want to remove that copper to make sure it cannot turn on without the switch being on.
I have 2oz copper traces. The trace I will need to remove is about 7 mm in width and probably 1 cm in length.
The only two ways I can think of getting rid of this trace region are:
- Try to scrape it off with an exacto knife. I have only ever taken solder mask off with a knife, so I don't know how well this will work on copper...
- Try to overheat that region of the PCB and hope the copper peels off. I've done this accidentally a few times. Well, the transistor burned and took the traces with it).
Is there a better/safer way? I could probably just not put the switch on the board, but put it on a separate prototype board by itself and wire that to the power board.