Item #3157434


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  • Make 3 different wind up toys reusing the same parts
  • Powered by mainspring- no batteries required
  • Snap together parts- no glue required

Assemble Toys that Spring into Action!

Build a motorized robot, race car, and countdown timer — all that run without any batteries or electrical power! The secret behind these fascinating machines is a power source called a mainspring — a spiral-shaped spring that stores up energy when wound up by hand, and then converts that stored energy back into motion when it discharges.

As you assemble these models one at a time from over 130 pieces, you will learn about the inner workings of spring-powered devices like wind-up toys and ticking mechanical clocks. Easy, snap-together assembly of 133 parts requires no glue. The kit includes step-by-step illustrated 64-page instruction manual.

For ages 6+.

More Information
Age Range 5 And Up
Price Range $25-$50

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