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Description
Stirling Engine Model Kit Single Cylinder Balance Science Experiment Kit with All-metal BaseSingle Cylinder Balance Stirling Engine Model Science Experiment Kit with All metal Base Features: . Exquisite Appearence: Fine polished model feels smooth and comfortable, full of metallic and modern, achieve a combination of texture and beauty, highlighting the exquisite workmanship. All metal gold flywheel and golden base are bright and full of luxury . Rish Configuration: In addition to the finished engine and alcohol lamps, there are also spare
Single Cylinder Balance Stirling Engine Model Science Experiment Kit with All-metal BaseFeatures:
.Exquisite Appearence: Fine polished model feels smooth and comfortable, full of metallic and modern, achieve a combination of texture and beauty, highlighting the exquisite workmanship. All-metal gold flywheel and golden base are bright and full of luxury
.Rish Configuration: In addition to the finished engine and alcohol lamps, there are also spare devices: a metal hot cylinder, two glass hot cylinders, a heating piston, two small lights, a belt, two sealing rings
.Excellent Performance: Made of Glass material, high speed and long time running without wear. The inside of the piston is solid
.Reasonable Design: Magnetic positioning alcohol lamp; Engine base with shockproof pad so that the engine is more stable in operation;
.Operating Principles and Methods: Stirling engines are powered by gases that expand when heated and contract when cooled. Use 95% alcohol in the operation（not included), can not add water, kerosene, gasoline, lighter oil, white wine. Put the engine model on the horizontal position, next take out the alcohol lamp, add about 2/3 alcohol into the alcohol lamp, under the premise of ensuring safety, ignite the alcohol lamp, you can gently power the flywheel rotation, the engine would work, finally light the small lamp
.Operational Meaning: Operating by yourself, we can observe the operation process of the whole engine, understand the principle of Stirling engine more intuitively, and deepen our interest in physics.
.For Age: Suitable for people over 14 years old.
.Precautions: The piston must be rotated to let it in or it is easy to break; The rubber ring can't stick too tightly. When heating, the cotton core shall not touch the heating cylinder; Be careful not to get hot during operation
Specifications:
.Color: As Shown
.Material: Metal + Glass
.Product Size: 16 x 8.8 x 11 cm
.Product Weight: 435g
.Package Dimensions: 19.5 x 11 x 13.5 cm
.Package Weight: 460g
.Packing: Box
Package Content:
.1Set x Stirling Engine Model
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4.1 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 4
A bit too firm but great otherwise
Color: Cool Grey, Size: 24x24x12 inch
I got this wedge pillow primarily to have something to lean my head against (I like to lay on my side when reading or looking at my phone at night sometimes), or to sit upright when reading in bed. It's very comfortable doing both now. It does a really good job at being a nice support for the back of my bed. Only negative is I feel it's too firm. I wouldn't use it as a primary pillow, but it's definitely good for back support at least.
While I won't mark it down for this, I do find it very large. If you have anything smaller then a queen it may take up more of your bed then you'd like.
Definitely recommend. Hopefully will last quite a long while as well.
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Reviewed in the United States on April 11, 2025
★★★★★ 5
So helpful after surgery.
Color: Solid Warm Gray, Size: 24x24x12 inch
Perfect support while recording from abdominal surgery. This pillow maintains its shape and is not overly soft. I used it vertically as a prop for watching television and then used it horizontally to prop myself up to sleep, once I returned to sleeping in bed. I used this daily for 6 weeks or so following surgery. The cover can be removed and machine washed. The non-slip nubbies are helpful. This pilllow is high quality and really helped to minimize pain and improve my sleep after surgery.
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Reviewed in the United States on February 4, 2026
★★★★★ 3
Nice wedge pillow but not enough...
Color: Cool Grey, Size: 24x24x12 inch
It came compacted and when I opened it expanded almost immediately, maybe took like 20 minutes to fully decompress. Its soft and comfortable and the cover is really nice. But it does have a strong chemical smell, which is normal for this kind of brand new memory foam, I just put it on a table with a window open near it and after maybe 24 hours the smell was almost completely gone.
The problem is that I bought this to have a elevated position when sleeping but the 30° are just not enough for me. I wish it was at least 45° but I could not find any pillow with that amount of degree... it's either 30° or like 75° in the other position. At the base of the pillow there is a little ridge that is comfortable for the lower back but makes me slide down in the middle of the night so I end up almost laying flat with my neck on the base ridge. With my slim build my lumbar area gets some nice support but makes my head almost have a "fall backwards" sensation, I like having my neck have a "push-forward" position with my pillow, but when adding another pillow to try and get to a comfortable position it only makes me slide down even more... :/
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Reviewed in the United States on November 6, 2024
★★★★★ 5
Very firm and durable
Color: Cool Grey, Size: 24x24x12 inch
worked great for husbands surgery recovery. Very affordable, firmness was great, looked nice on the bed and also used it for the grandkids when they were watching a movie. Moved around with ease. Didn't use it to sleep with all night though. He could only make it half the night but that wasn't the pillows fault. It was the cast on his arm. Definitely did its purpose after surgery and the need to sit up in bed more. highly recommend
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Sasstie Wedge Pillow
Color: Cool Grey, Size: 24x24x12 inch
Perfect. I used it when I was recovering from hip surgery. Relieved a lot of pain in my hip and knee at a time when I needed relief.
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Reviewed in the United States on May 30, 2026