Introduction
Thank you for choosing the DIYthinker Heat Sensitive Windmill Mug. This unique ceramic mug features a special heat-activated coating that reveals a vibrant windmill design when hot liquid is added, and returns to its original red color as it cools. This manual provides essential information for the proper setup, operation, and care of your new mug.

Image: The DIYthinker Heat Sensitive Windmill Mug, showcasing the detailed windmill illustration that appears when the mug is hot. The mug features a distinctive red heart-shaped handle.
Initial Setup
Before using your mug for the first time, please follow these simple steps:
- Unpack the mug carefully from its packaging.
- Wash the mug thoroughly with warm water and mild dish soap. Rinse well.
- Allow the mug to air dry or dry with a soft cloth before first use.
Operating Instructions
The mug's color-changing feature is activated by heat. Follow these steps to experience the transformation:
- Ensure the mug is at room temperature. In its cool state, the mug will appear predominantly red.
- Pour hot liquid, such as coffee, tea, hot chocolate, or hot water, into the mug.
- For the color change to activate effectively, the liquid temperature must be above 70°C (158°F).
- Observe as the red color of the mug gradually fades, revealing the detailed windmill design underneath.
- As the mug and its contents cool down, the original red color will slowly return, concealing the design once more.

Image: A visual representation of the mug's heat-sensitive feature, showing a red mug on the left and a lighter, transformed mug on the right, with an arrow indicating the effect of hot water.
Care and Maintenance
To ensure the longevity and optimal performance of your heat-sensitive mug, please adhere to the following care instructions:
- Washing: The mug is dishwasher safe. However, for best results and to preserve the heat-sensitive coating, hand washing with mild soap and warm water is recommended.
- Microwave Use: The mug is microwave safe. You can safely heat beverages in it.
- Avoid Abrasives: Do not use abrasive cleaners, scouring pads, or harsh chemicals, as these may damage the heat-sensitive surface and the printed design.
- Extreme Temperatures: Avoid sudden and extreme temperature changes, which could potentially affect the mug's integrity or the heat-sensitive coating over time.
- Storage: Store the mug in a dry place away from direct sunlight when not in use.
Troubleshooting
If you encounter any issues with your mug, please refer to the following common problems and solutions:
Problem | Possible Cause / Solution |
---|---|
Color does not change or changes incompletely. | Ensure the liquid poured into the mug is hot enough (above 70°C / 158°F). The color change is temperature-dependent. If the mug is already warm, the effect may be less pronounced. |
Design appears faded or worn over time. | This can occur with prolonged exposure to very high temperatures, harsh detergents, or abrasive cleaning. Follow the care instructions carefully to maximize the mug's lifespan. |
Mug cracks or chips. | Ceramic can be fragile. Avoid dropping the mug or subjecting it to sudden impacts. Do not use if cracked or chipped. |
Product Specifications
Feature | Detail |
---|---|
Brand | DIYthinker |
Model | y03052065b3011909f22848 |
Material | Strong Ceramic |
Capacity | 350 ml (approximately 12 oz) |
Dimensions | 9.6 cm (3.8 inches) Height x 8.2 cm (3.2 inches) Diameter |
Heat Activation Temperature | Above 70°C (158°F) |
Special Features | Heat-sensitive color change, Microwave safe, Dishwasher safe |

Image: A diagram illustrating the precise dimensions of the mug, including its height, diameter, and liquid capacity.
Warranty and Support
This product comes with a standard manufacturer's warranty. For specific warranty details, technical support, or any inquiries not covered in this manual, please contact DIYthinker customer service through their official website or the retailer where the product was purchased.
When contacting support, please have your product model number (y03052065b3011909f22848) ready for faster assistance.