{"product_id":"mechanical-combine-harvester-3d-wooden-puzzle","title":"Mechanical Combine Harvester 3D Wooden Puzzle","description":"\u003cp\u003eExperience the thrill of engineering with this Mechanical Combine Harvester. This intricate 3D wooden puzzle brings agricultural machinery to life through visible, interlocking gears and a functional rubber-band motor. It's a rewarding, screen-free project that transforms flat wooden sheets into a kinetic masterpiece, perfect for hobbyists and farm enthusiasts alike.\n\n\u0026lt;ul\u0026gt;\n  \u0026lt;li\u0026gt;\u0026lt;strong\u0026gt;Material:\u0026lt;\/strong\u0026gt; Premium Birch Plywood\u0026lt;\/li\u0026gt;\n  \u0026lt;li\u0026gt;\u0026lt;strong\u0026gt;Assembly Time:\u0026lt;\/strong\u0026gt; 4-6 hours\u0026lt;\/li\u0026gt;\n  \u0026lt;li\u0026gt;\u0026lt;strong\u0026gt;Dimensions:\u0026lt;\/strong\u0026gt; 11.22 x 6.30 x 5.51 inches (28.5 x 16.0 x 14.0 cm)\u0026lt;\/li\u0026gt;\n  \u0026lt;li\u0026gt;\u0026lt;strong\u0026gt;Features:\u0026lt;\/strong\u0026gt; Rubber-band motor, moving front header, visible gear mechanics\u0026lt;\/li\u0026gt;\n\u0026lt;\/ul\u0026gt;\n\nFree shipping \u0026amp; duties included — no hidden fees at checkout · Ships in 48h, arrives in 6–8 business days · 30-day returns\n\u0026lt;p\u0026gt;All-inclusive pricing includes shipping and import duties; free shipping on every order with no minimum and no hidden checkout fees. Ships in 48h and arrives in 6–8 business days. 30-day returns; customers pay return shipping. Contact info@jigden.com.\u0026lt;\/p\u0026gt;\n\n\u0026lt;strong\u0026gt;Q: Do I need glue to assemble this?\u0026lt;\/strong\u0026gt;\nA: No glue is required. The precision laser-cut pieces interlock securely.\n\n\u0026lt;strong\u0026gt;Q: Are batteries needed?\u0026lt;\/strong\u0026gt;\nA: No batteries are needed. It is powered entirely by a mechanical rubber-band motor.\n\n\u0026lt;strong\u0026gt;Q: What is the recommended age?\u0026lt;\/strong\u0026gt;\nA: This kit is rated for ages 14 and up due to small parts and mechanical complexity.\n\n\u0026lt;strong\u0026gt;Q: How do I contact support?\u0026lt;\/strong\u0026gt;\nA: You can reach us anytime at info@jigden.com.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKinetic rubber-band motor drives the wheels and front header.\u003c\/li\u003e\n\u003cli\u003eIntricate visible gear system showcases mechanical engineering.\u003c\/li\u003e\n\u003cli\u003ePrecision laser-cut birch plywood for a satisfying, glue-free build.\u003c\/li\u003e\n\u003cli\u003ePerfect screen-free gift for hobbyists and farm machinery fans.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePieces\u003c\/th\u003e\n\u003ctd\u003e\/\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinished size\u003c\/th\u003e\n\u003ctd\u003eLength 28.5 cm \/ 11.2 in · Width 16 cm \/ 6.3 in · Height 14 cm \/ 5.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage weight\u003c\/th\u003e\n\u003ctd\u003e520 g \/ 0.520 kg \/ 1.15 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAge range\u003c\/th\u003e\n\u003ctd\u003e14+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePremium Birch Plywood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDifficulty\u003c\/th\u003e\n\u003ctd\u003eModerate to High\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch4\u003eDo I need glue to assemble this?\u003c\/h4\u003e\u003cp\u003eNo glue is required. The precision laser-cut pieces interlock securely.\u003c\/p\u003e\u003ch4\u003eAre batteries needed?\u003c\/h4\u003e\u003cp\u003eNo batteries are needed. It is powered entirely by a mechanical rubber-band motor.\u003c\/p\u003e\u003ch4\u003eWhat is the recommended age?\u003c\/h4\u003e\u003cp\u003eThis kit is rated for ages 14 and up due to small parts and mechanical complexity.\u003c\/p\u003e\u003ch4\u003eHow do I contact support?\u003c\/h4\u003e\u003cp\u003eYou can reach us anytime at info@jigden.com.\u003c\/p\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships from the US-facing Jigden store in 5-8 business days after order confirmation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eReturns:\u003c\/strong\u003e 30-day returns are accepted for unused items in original condition. Contact support with your order number before sending anything back.\u003c\/p\u003e","brand":"JigDen","offers":[{"title":"Default Title","offer_id":51931068104920,"sku":"MPT063","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6832\/3032\/files\/01_main_white_c7818c16-6779-4136-8402-09be2e56f95a.jpg?v=1782878367","url":"https:\/\/jigden.com\/products\/mechanical-combine-harvester-3d-wooden-puzzle","provider":"JigDen","version":"1.0","type":"link"}