{"product_id":"prime-steam-express-train-mc501-kit","title":"Robotime ROKR MC501 | Prime Steam Express - Mechanical Wooden 3D Puzzle Train Kit - 308 Pieces | DIY Display Model","description":"\u003cdiv class=\"sectionContent\"\u003e\n  \u003cp\u003eThe Robotime ROKR MC501 Prime Steam Express is a 308-piece laser-cut wooden 3D puzzle that builds into a fully working mechanical steam locomotive. Once assembled, an internal wind-up gear train powers the wheels and side rods for self-propelled movement — no batteries, no glue, no power tools needed. It's the perfect DIY project for adults, teens, and any model railroader looking for a striking handcrafted display piece.\u003c\/p\u003e\n  \u003cp\u003eLooking for more 3D puzzles and craft kits? Browse our \u003ca href=\"https:\/\/squeakystrains.com\/collections\/buildings-structures\" target=\"_blank\"\u003eBuildings \u0026amp; Structures\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakystrains.com\/collections\/scenery\" target=\"_blank\"\u003eScenery\u003c\/a\u003e collections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eFeatures\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003cul\u003e\n    \u003cli\u003e308 precision laser-cut basswood pieces — no glue, no power tools required.\u003c\/li\u003e\n    \u003cli\u003eWorking wind-up mechanism — tension the internal spring and the locomotive self-propels across a flat surface.\u003c\/li\u003e\n    \u003cli\u003eAuthentic steam-era detail — boiler, smokestack, cab, drive rods, and driver wheels.\u003c\/li\u003e\n    \u003cli\u003eFinished assembled size approximately 11.4 × 4.5 × 6 in — impressive desk or shelf display.\u003c\/li\u003e\n    \u003cli\u003eStep-by-step illustrated instructions in English — recommended ages 14+.\u003c\/li\u003e\n    \u003cli\u003eEstimated assembly time: 6–10 hours over multiple sittings.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eWhat's Included\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eItem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eQty\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eLaser-cut basswood sheets (parts pre-cut)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eAll 308 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eIllustrated assembly instructions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eSandpaper for finishing\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1 sheet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eHardware (springs, axles, etc.)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eAll included\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eMore Information\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eRobotime \/ ROKR\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eItem Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMC501\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003ePrime Steam Express\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e3D mechanical wooden puzzle \/ DIY model kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eLaser-cut basswood\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePieces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e308\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eAssembled Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e11.4 × 4.5 × 6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eWind-up mechanical — no batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRecommended Age\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e14+\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSkill Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eIntermediate\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eNew — sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sectionTitle\"\u003eFAQ\u003c\/div\u003e\n\u003cdiv class=\"sectionContent\"\u003e\n  \u003cp\u003e\u003cstrong\u003eDo I need glue or paint?\u003c\/strong\u003e\u003cbr\u003eNo — this kit is friction-fit and clicks together using the laser-cut joinery. Most builders leave the natural wood finish, but you can stain or paint if you prefer.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eDoes it actually move?\u003c\/strong\u003e\u003cbr\u003eYes. Once assembled, a wind-up spring mechanism inside the locomotive drives the wheels — it rolls forward on a flat surface for several feet per winding. No batteries or electricity needed.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWill it run on model train tracks?\u003c\/strong\u003e\u003cbr\u003eNo. This is a freestanding display model, not scaled to HO\/N\/G track. It's meant for desktop or shelf display and self-propelled movement on a flat surface.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eHow long does it take to build?\u003c\/strong\u003e\u003cbr\u003eMost builders finish in 6–10 hours spread across two or three evenings. The illustrated step-by-step instructions are very clear.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robotime","offers":[{"title":"Default Title","offer_id":48271510208767,"sku":"MC501","price":19.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0443\/5968\/0161\/files\/image_67dd5818-81fa-4d3e-9d81-2d0554d24da9.jpg?v=1773077701","url":"https:\/\/squeakystrains.com\/products\/prime-steam-express-train-mc501-kit","provider":"Squeaky's Trains \u0026 Things","version":"1.0","type":"link"}