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Fixing traces... not fun but certainly doable!

2006-01-17 by lcdpublishing

This weekend I etched some boards with .010" wide traces with .010" 
wide spacing. After etching I found a couple of traces "broken" so I 
had to repair them and with these old eyes, it wasn't easy but I did 
get it.

I tinned the board using solder paste (plumbers paste) as I have 
been doing.  I then extracted some strands of conductor from 
stranded wire and tinned that.  

To make the "jumper", I laid the strand against the trace, and 
pressed down with the soldering iron tip and it held.  It worked 
fine for all the breaks I had to fix.

I did try to drag solder over the gaps to bridge them, but couldn't 
get that to work.  Further complicating it was the small traces and 
close proximity of the traces - I would end up shorting out several 
traces together.

While not an ideal solution, it worked pretty good.

As to the reason for the breaks in the traces - just being in too 
much of a hurry.  After doing the toner transfer, I inspected the 
boards very good and did notice the missing toner.  Knowing that the 
Sharpie pen is too blunt to patch the spot, I just went for the 
etching.  I really should have cleaned the boards and tried the 
transfer process again - it would have been much faster and easier.

Chris

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