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 On Tue, Jun 23, 2009 at 10:52 PM, solarwind wrote: > > On Wed, Jun 24, 2009 at 2:58 AM, John Gardner wrote: > > Fiberglass dust is'nt a probiotic, last time I looked. > > > > Sheet metal snips do OK on thin boards. > > Thank you for your replies. Would it work if i score the underside of > the board (not the copper side) with an exacto knife and snap it? > Would I have to score the copper side as well? If I do, would the > copper damage the metal on my knife? > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist