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Materials and components. It'll be a while before consumer devices can 3D-print a battery, motor, or microchip, but it probably won't be too long before a 3D-printer pattern includes them, and the printer can insert them.
Patterns will be sold as well, but they are easily pirated.
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|...............| We live in the nick of times.
| Len 17, Wid 3 |
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