I've done a couple of boards as subassemblies, with mouse-bites on the edges.
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Here are some home-made mouse bites.
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done by slicing a pcb with a cool little Micro-Lux table saw.
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I plan to do a bunch of test circuits on a proto board, and I can shear it up and do them as mousebite subassemblies.The photo was taken with a Celestron USB microscope, a really nice instrument.
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There are a lot of junky usb microscopes around, but this one is really good.