{"product_id":"over-under-4-loop-chain-puzzle-oskar-inspired","title":"Over \u0026 Under 4-loop Chain Puzzle (3D printing Mod)","description":"\u003ch3 data-path-to-node=\"5\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5\"\u003eOver \u0026amp; Under 4-Loop Chain Puzzle | Intersecting Track Sequential Puzzle by Gao\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"6\"\u003eExpand your mechanical puzzle collection with the \u003cb data-index-in-node=\"50\" data-path-to-node=\"6\"\u003eOver \u0026amp; Under 4-Loop Chain Puzzle\u003c\/b\u003e, a brilliant interlocking track masterwork designed and manufactured by Gao. \u003cb data-index-in-node=\"160\" data-path-to-node=\"6\"\u003eAs a direct evolutionary step inspired by puzzle pioneer Oskar van Deventer’s legendary 3-Loop concept, this 4-loop edition strikes the ultimate balance between intuitive sliding logic and complex sequential geometry.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003eThe puzzle features an industrial-grade, high-precision 3D-printed matte grey chassis structured around 4 continuous, intersecting circular tracks. Inside this interwoven matrix rolls a precisely calibrated array of 96 vibrant, 12mm marbles split into a multi-color spectrum (24 marbles per loop). Operating on a dual-layered shifting core, the puzzle enables you to change the pathway connections by clicking the main segments into distinct indexing holds. By weaving the marbles through the shared crossover points and rotating the body, you scramble the color sequences across all 4 loops. Your mission is to decode the tracking logic and sort every single color back into its isolated ring.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003eEngineered with tight internal track tolerances, this boutique mod ensures an ultra-smooth, catching-free movement. Embedded positioning pins and premium micro-magnets deliver a crisp, tactile click and flawless alignment at every turn, providing an incredibly satisfying solving experience.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"10\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"10\"\u003e🧩 Key Mechanical Features\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,0,0\"\u003eOskar-Inspired Heritage (Mid-Tier Challenge)\u003c\/b\u003e: Bridges the gap between Oskar's classic 3-Loop and the extreme 5-Loop matrix, serving as the perfect sweet-spot challenge for collectors.\u003c\/p\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,1,0\"\u003eIntersecting 4-Track Kinematics\u003c\/b\u003e: Features 4 interwoven \"over and under\" circular paths that seamlessly route 96 premium marbles across different dimensional planes.\u003c\/p\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,2,0\"\u003eTactile Magnetic Indexing\u003c\/b\u003e: Outfitted with strong micro-magnets to ensure snappy, stable shifting and flawless track alignment with every rotation.\u003c\/p\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"11,3,0\"\u003eBoutique Collector’s Build\u003c\/b\u003e: The contrast between the rugged matte-grey 3D-printed frame and the high-gloss 12mm marbles creates a striking modern aesthetic.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"13\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"13\"\u003e📐 Technical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp data-path-to-node=\"14,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,0,0\"\u003eDesigner \/ Manufacturer\u003c\/b\u003e: Gao\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,1,0\"\u003eDesign Lineage\u003c\/b\u003e: Inspired by Oskar van Deventer's 3-Loop Concept\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,2,0\"\u003eItem Name\u003c\/b\u003e: Over \u0026amp; Under 4-Loop Chain Puzzle\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,3,0\"\u003eMechanical Layout\u003c\/b\u003e: Intersecting Track \/ Sequential Movement Puzzle\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,4,0\"\u003eChassis Material\u003c\/b\u003e: High-Precision, Rigid 3D-Printed Compound (Matte Grey)\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,5,0\"\u003eMarble Array\u003c\/b\u003e: 96 Premium 12mm Marbles (Multi-Color Assortment)\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"14,6,0\"\u003eCondition\u003c\/b\u003e: 100% Brand New, Fully Assembled \u0026amp; Hand-Tuned\u003cbr\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"16,0\"\u003e⚠️ Custom Boutique Production Note:\u003c\/b\u003e As an elite custom-modified puzzle, each 4-Loop unit requires individual precision hand-assembly, detailed magnet calibration, and rigorous track testing by the designer. The standard processing time takes approximately \u003cb data-index-in-node=\"256\" data-path-to-node=\"16,0\"\u003e1–2 weeks\u003c\/b\u003e before dispatch. We appreciate your patience in securing this exquisite piece of custom craftsmanship.\u003c\/p\u003e","brand":"Gao","offers":[{"title":"Silver","offer_id":55755804311925,"sku":"4-Loop","price":24.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0620\/5053\/3559\/files\/Over-_-Under-4-loop-Chain-2.jpg?v=1783217288","url":"https:\/\/cubein.cn\/products\/over-under-4-loop-chain-puzzle-oskar-inspired","provider":"CubeIn","version":"1.0","type":"link"}