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- 99.6% Reviewers Buy 2 or more!
Features:
★ Easy to Operate: Just place it on a cup of hot water, and gently flip the wheel until the wheel can run automatically.
★ Superior Performance: By operating the engine, children would observe and know the operational process and more intuitive understanding of the operating principle of Stirling engine, deepening interest in physics.
★ A Classic Stirling Engine Model: Made of premium metal, and the high intensity PC material is heat-resistant and harmless. Transparent body gives you a clear view on how every parts work .
★ Safe for Children: No need to fire an alcohol lamp, safer for children. Fully assembled, no need to install it yourself.
★ Great Educational Toy: classroom or laboratory experimental teaching aids, the best choice gift for students, teachers, children , friends and colleagues.
Product details:
Overall metal material, CNC fine carving, fine workmanship,
Metal double gear valve phase,
8 precision bearings inlaid, light, long-lasting operation.
Product parameters:
Overall dimensions: 90mm*90mm*120mm
Flywheel diameter: 80mm
Weight: 170g
Material: Aluminum alloy /Copper alloy/stainless steel Surface process: Oxidation sandblasting/polishing How to use ① Use a flat-mouthed water cup with a diameter less than 85mm, and pour boiling water to a height of about 1 cm from the cup mouth;
② Place the machine in the center above the cup mouth and wait for 15 seconds Left and right, turn the flywheel to rotate at high speed;
Note: This product must not be heated with a heat source higher than 120℃, otherwise it will cause damage!!
It is forbidden to apply liquid grease to any moving parts, otherwise it will not start!!
This product must not be directly immersed In water or in direct contact with water!!
Children must use under adult supervision to prevent scalding from hot water!!
AFTER SALE SERVICE
- We offer a 100% satisfaction guarantee, a 30-day money-back guarantee.
- We have 24/7/365 Facebook Messenger and email support.
- We strive to make our customers 100% satisfied with the product you have purchased. Please don't hesitate to email us with any questions or problems and we will help you right away.
- Tip: Buying 2 products or more at the same time will save you quite a lot on shipping fees.
THIS PRODUCT IS A LIMITED PRODUCTION AND IS NOT AVAILABLE IN STORES. WILL SELL OUT FAST!
🔥 Fast refund>> Partial or full refund depend on the situation;
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We do our best to process & ship all orders as soon as possible. We're proud to offer worldwide shipping