{"product_id":"pathfinders-stem-kit-roman-ballista-crossbow-science-kits-for-kids-age-8-10-10-14-stem-kits-for-kids-age-12-14-physics-toys-engineering","title":"Pathfinders STEM Kit - Roman Ballista Crossbow | Science Kits for Kids Age 8-10 10-14 | stem Kits for Kids Age 12-14 Physics Toys |Engineering |","description":"\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e PATHFINDERS\u003c\/p\u003e\u003cp\u003eThe PATHFINDERS Roman Ballista Kit puts one of antiquity's most feared siege weapons on your workbench. Precision laser-cut from real FSC-certified wood, every component fits together with satisfying accuracy - no guesswork, no frustration, just the deep satisfaction of building something that actually works. The Ballista was Rome's most sophisticated artillery piece: a giant crossbow powered by twisted rope bundles (torsion skein) that could launch bolts with devastating force across a battlefield. Now you can build a working scale replica and discover exactly how it was done. This is a real builder's kit - not a snap-together novelty. Expect an engaging assembly experience of approximately 1 to 2 hours as you work through the mechanism step by step, guided by a fully illustrated instruction booklet that blends build directions with the history and engineering science behind each component. What you'll explore: torsion mechanics and elastic potential energy - classical Roman military engineering and siege tactics - precision woodworking and model assembly - projectile physics and trajectory. Designed for ages 14 and up. Ideal for high school and university students, STEM hobbyists, history enthusiasts, homeschool programs, and anyone who wants a meaningful hands-on build. The completed model makes an impressive display piece and a fully functional conversation starter. Also available: the complete PATHFINDERS Ancient Siege Engine Series - Roman Catapult, Trebuchet, Onager, and more. Collect the full line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBUILD A WORKING ROMAN SIEGE WEAPON - Construct a fully functioning die-cut wooden Ballista inspired by the engineering mastery of ancient Rome. Assemble every torsion-powered component by hand and watch centuries-old mechanical principles come to life on your workbench.\u003c\/li\u003e\n\u003cli\u003eHANDS-ON ENGINEERING \u0026amp; PHYSICS - Explore torsion mechanics, projectile trajectory, and classical force transfer through an immersive build experience. Every joint, arm, and skein teaches real principles of mechanical advantage - ideal for STEM students, hobbyists, and engineering enthusiasts ages 14 and up.\u003c\/li\u003e\n\u003cli\u003ePRECISION DIE-CUT FSC WOOD - All components are laser-cut from sustainably sourced FSC-certified wood for tight tolerances and a satisfying, splinter-free build. No plastic. No flimsy parts. The finished model is a display-worthy working replica built to last.\u003c\/li\u003e\n\u003cli\u003eHISTORICALLY GROUNDED EDUCATIONAL CONTENT - Includes a detailed illustrated instruction manual packed with historical context on Roman military engineering. Builders develop patience, spatial reasoning, and assembly skills while gaining a genuine appreciation for ancient innovation.\u003c\/li\u003e\n\u003cli\u003eTHE PERFECT GIFT FOR BUILDERS \u0026amp; HISTORY ENTHUSIASTS - Designed for teens and adults who want more than screen time. An exceptional gift for high school and university students, makers, history buffs, homeschool programs, classroom STEM projects, and anyone who loves building something real. Age 14+.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Wood\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e Medium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e D-50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PATHFINDERS","offers":[{"title":"Default Title","offer_id":44377493012545,"sku":"MCAB07BB4WQ21","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/6321\/7729\/files\/41QFsi34UQL.jpg?v=1786466854","url":"https:\/\/toycartusa.com\/products\/pathfinders-stem-kit-roman-ballista-crossbow-science-kits-for-kids-age-8-10-10-14-stem-kits-for-kids-age-12-14-physics-toys-engineering","provider":"ToyCartUSA","version":"1.0","type":"link"}