{"product_id":"mini-crossbow-wooden-engineering-model-building-kit","title":"Mini Crossbow: Wooden Engineering Model Building Kit","description":"\u003cp\u003e\u003cspan\u003eReady to storm an evil villain's castle? This mini ballista building kit is exactly what you need! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLearn about engineering simple machines, physics, math, and history all with this STEM building kit. Building this wooden mini model kit helps demonstrate how a bent bow stores elastic energy and the mechanical advantage of a lever to multiply human force. Once built, you can launch mini projectiles and defeat those pesky beasts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe renowned Renaissance artist Leonardo da Vinci designed this crossbow. He was also a scientist, architect, engineer, and inventor. While we may have put this through an inshrinkerator, it would have been an intimidatingly giant crossbow or “ballista”. This design of a complex system of gears and pulleys demonstrates engineering and mechanics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDetails:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePre-cut wooden models for DIY assembly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFor ages 8+\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEstimated build time 30 minutes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilt dimensions 7”x 2 ¼” x 3 ½” (mini!)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncludes educational manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Copernicus","offers":[{"title":"Default Title","offer_id":54973349986528,"sku":"443530","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0077\/2797\/2442\/files\/Paxton_Gate_copernicus_Crossbow2.jpg?v=1789770670","url":"https:\/\/paxtongate.com\/products\/mini-crossbow-wooden-engineering-model-building-kit","provider":"Paxton Gate","version":"1.0","type":"link"}