![How to prevent double-layer glass from cracking.](http://homew.com/cdn/shop/articles/Omita-Wallya-Double-Wall-Coffee-Mug-04_1024x1024.jpg?v=1612769486)
How to prevent double-layer glass from cracking.
- by Homew INC
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How to prevent double-layer glass from cracking.
![](https://cdn.shopify.com/s/files/1/0469/1250/3969/files/Omita_Wallya_Collection_Double_Wall_Coffee_Mug_06_480x480.jpg?v=1612768581)
The reason for the explosion of the double-layer glass is that as soon as hot water is poured into the cup, the inner wall of the cup will be heated and expanded rapidly, but the outer wall of the cup remains the same. The inner glass is suddenly squeezed outwards and the cup bursts.
![](https://cdn.shopify.com/s/files/1/0469/1250/3969/files/Omita_Wallya_Collection_Double_Wall_Coffee_Mug_05_480x480.jpg?v=1612768609)
Let’s introduce the methods for preventing cracking, let’s take a look:
- When flushing the water, put a metal utensil such as a copper fork, aluminum spoon, etc., so that the cup will not burst easily.