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Step 4Cut the PCB Down to Size
Using your to-scale drawing, figure out how big the board needs to be.
I left a little more room for the power cord to enter on one side.
Cut by scoring repeatedly (light pressure is fine) with a matte knife. Flip board, mark carefully, and repeat on the other side. Then you should be able to flex it a few times and it'll fatigue and snap.
(If you watch the video, I didn't really score it enough. Still made a fine edge anyway.)
I left a little more room for the power cord to enter on one side.
Cut by scoring repeatedly (light pressure is fine) with a matte knife. Flip board, mark carefully, and repeat on the other side. Then you should be able to flex it a few times and it'll fatigue and snap.
(If you watch the video, I didn't really score it enough. Still made a fine edge anyway.)
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