However, Michael DiMario, public printer at the Government Printing Office, thinks closing NTIS could make it more challenging for the public to find government documents.

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The government may simply insist that 3D printer manufacturers install software that prevents printing of a hollow cylinder of a certain size, a firing pin, or a certain type of spring.

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Earlier the court heard evidence from printer Amash Shah Syed, 50, about an alleged meeting to discuss fake Danish government bonds.

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