Homebrew_PCBs

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.

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.

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

Okay.. I was afraid I might gouge the board with a knife.  I’ll give it a try.

Here are some pics of my TVT project as it stands, including a comparison shot of an original TVT board (left) and my new ones (right).  Pretty close.  I’m trying to figure out whose marks are on the original board.. look like an N.. might tell me who made the original PCB material.

http://s1381.photobucket.com/user/unclefalter/library/TV%20Typewriter%20Project