The 519 Lego Technic pieces come in half a dozen nonresealable bags, forcing you to waste time sorting and storing.

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Using 20, 000 Lego pieces, Lego Technic expert Nicolas Lespour built an automated mechanical loom that weaves fabric from multiple bobbins of colored yarn.

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The Warbeast uses two LEGO Technic motors to keep the gun firing at a constant rate, but the other guns in the book are powered by nothing but rubber bands and physics.

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