On Wed, Jun 24, 2009 at 5:12 AM, Sean Breheny<shb7@cornell.edu> wrote:
> Hi Solarwind,
>
> If you are going to try to snap it, I would score both sides. If you
> want to score only one, I would score the copper side, NOT the bare
> side. This is because snapping, without cutting through the copper,
> may cause part of the copper to tear and pull off the PCB. I would
> score it by making many fairly light passes and then clamp the board
> between two straight edges (like a table and a piece of wood or the
> jaws of a vice) and bend it back and forth at the score linet. The
> score line should lie very close to the line where the board is
> clamped to make that line the highest stress concentration.
>
> A sharp utility knife would probably work better than an xacto knife,
> although both would work. Wear eye protection as the blade could snap
> if you press too hard. Of course, also make sure that no part of your
> body is in the line of cutting in case the blade slips. I speak from
> experience here, with a scar on my thumb to prove it :)
>
> Copper is so much softer than steel that it will cut very easily with
> the knife. It should not damage the knife much faster than any cutting
> job would.
>
> Sean

Very useful information. Thank you!
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