Re: Best way to remove copper from a PC board.

On Fri, 26 Oct 2007 09:31:42 +0100, Eeyore
<rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:



Jimmie D wrote:

I have a systron donner freq counter I want to modify to use LEDs instaed of
nixies. I really like the nixie tube readout but I am having to replace the
drivers too often. My plan is to remove the tracks connecting the 7490
counters to the nixie drivers and to etch away the connections to the nixie
tubes leaving the pads around the holes for the drivers. Replace the nixie
drivers with 7 segment decoder/drivers and rewire wire wirewrap wire. My
trouble is removing the old copper. I dont want to dip the whole board. Im
thinking of applying small aounts of Nitric acid to the traces.

Cut the traces with a surgical knife and peel away the copper.

Graham

Or use a Dremel with a very small burr to cut the traces.
.

Relevant Pages

  • Re: Best way to remove copper from a PC board.
    ... I really like the nixie tube readout but I am having to replace the ... counters to the nixie drivers and to etch away the connections to the nixie ... Cut the traces with a surgical knife and peel away the copper. ...
    (sci.electronics.equipment)
  • Re: nixie driver
    ... JIMMIE wrote: ... counter works fine but I am forever replacing the Nixie drivers ... some current-sink drivers to do the same. ... If the goal isn't nixie tubes but is a working frequency counter, ...
    (rec.radio.amateur.homebrew)
  • Re: nixie driver
    ... JIMMIE wrote: ... counter works fine but I am forever replacing the Nixie drivers ... some current-sink drivers to do the same. ... If the goal isn't nixie tubes but is a working frequency counter, ...
    (rec.radio.amateur.homebrew)
  • Re: nixie driver
    ... counter works fine but I am forever replacing the Nixie drivers ... some current-sink drivers to do the same. ... If the goal isn't nixie tubes but is a working frequency counter, ...
    (rec.radio.amateur.homebrew)
  • Best way to remove copper from a PC board.
    ... I have a systron donner freq counter I want to modify to use LEDs instaed of ... I really like the nixie tube readout but I am having to replace the ... counters to the nixie drivers and to etch away the connections to the nixie ...
    (sci.electronics.equipment)
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