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Brian Symons has it right in his choice #5, except that there is very little danger IMHO.
Here is how I would do that:
Hold a flat metal straightedge between holes and score across traces using a #11 hobby knife. Move the straightedge slightly and score again. Use the point of the knife to pry off the copper segments from between score marks. I've seen assemblers place engineering changes on prototypes using this method and it works a treat. Their work is prettier than mine though.
--Len
---In homebrew_pcbs@yahoogroups.com, <palciatore@...> wrote:What I would do is mount a 1/8" drill bit (carbide?) in my drill
press, set the depth stop to allow it to cut through the copper and
not the board under it, and have at it. The drill will center on the
hole so the work is fast. Sounds like a 5 or 10 minute job.
But, of course, you do need a drill press. With a good depth stop,
not the cheap, clumsy ones that the Chinese imports come with.
Also, Vector makes a tool that is just for this purpose. It is used by hand.
http://www.digikey.com/product-detail/en/P138A/V1056-ND/7642
It will take more time with this.