The world’s smallest 3D printer can fit in your wallet, but still works

The force behind My N Mi, a hobbyist YouTube channel for “technical experiments”, claims to have built the smallest and lightest 3D printer in the world.

At 18 x 31 x 41mm (0.7 x 1.2 x 1.6 inches), coming in as about as tall as a matchstick and as wide as an SD card adapter (per My N Mi’s own comparisons), and weighing just 17g (0.03 pounds), this isn’t just bluster. 

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