Homebrew PCBs

On Sat, 25 Jun 2016 10:00:16 -0700, you wrote:

>I decided to make another motherboard for my TVT.  The first one involved
>some trial and error and it showed, esp. some of the traces where my first
>attempt at etching managed to get under the toner.
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>So I made a new one, but I think I goofed and didn't put enough vinegar in..
>the result is there are just a few small, mostly faded patches of copper
>lefer where I don't want them.  I've tested traces and there is a *little*
>bit of conductivity where there shouldn't be, so I need to get rid of these.
>Is there a way to do it without wrecking the board?  I was thinking maybe
>dremel but I'm afraid of pitting or hitting one of the traces.

Try putting a few drops on that one little area.  Monitor it.


Other ways are to try burning the track off with a lot of current, but
that has its own problems.

Dremel can work, but you need to practice on a few scraps first.

Harvey


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>On the subject of cutting, I bought a carbide tipped laminate cutter.  Works
>amazingly well!
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