Posted by Jim Davis on 4/15/2026, 2:33 pm, in reply to "10,000 tugboats in 30 minutes"
I wonder how thin to-scale gun barrels would be at this scale! 
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Advances in 3D-printing (but they're only 85 micrometers long)
https://physicstoday.aip.org/backscatter/tiny-boats-demonstrate-a-new-
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