How to inspect a card under raking light
Before anything else, find out what you have. Tilt the card slowly under a low, angled light and check the corners, edges, centering and surface on both sides.
What you'll see
- Set the light low and to one side so it rakes across the card.
- Tilt the card slowly and watch the surface for scratches, print lines, dimples and fingerprints.
- Check each corner and edge for whitening, softness and chipping.
- Compare the borders left to right and top to bottom for centering.
- Confirm anything you're unsure of under magnification.
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