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Full Version: Can sewing thread go bad?
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Sewing thread, like many other materials, can indeed go bad or degrade over time, although it typically has a long shelf life if stored and handled properly.

Here are some factors that can affect the quality and lifespan of sewing thread:

Exposure to Light: Prolonged exposure to direct sunlight or ultraviolet (UV) light can cause thread to fade or weaken over time. It's best to store thread in a cool, dark place away from direct sunlight.

Humidity and Moisture: Excessive humidity and moisture can lead to mould or mildew growth on thread, especially if the thread is stored in damp conditions. Mouldy thread should not be used as it can weaken and damage the fabric.

Temperature: Extreme temperatures, both hot and cold, can affect the quality of thread. High temperatures can cause the thread to become brittle, while freezing temperatures can affect its elasticity. Store thread in a stable, moderate-temperature environment.

Dust and Contaminants: Dust and contaminants in the air can settle on thread over time, making it less suitable for sewing. Keeping thread in a sealed container or storage box can help protect it from dust.

Storage Conditions: Proper storage is key to preserving the quality of sewing thread. Thread should be stored in a dry, clean, and dust-free environment. Many sewers use thread storage containers or cabinets to keep their thread organized and protected.

Thread Material: The material of the thread itself can affect its lifespan. Natural fibres like cotton and silk may degrade faster than synthetic threads like polyester or nylon. However, even synthetic threads can deteriorate over an extremely long period.

Age: Thread does have a shelf life, although it can vary depending on the quality of the thread and storage conditions. Over time, thread can become more brittle, lose its strength, and become more prone to breakage.

If you're unsure about the quality of your sewing thread, especially if it has been stored for an extended period, you can perform a simple test.

Unwind a length of thread and gently pull on it. If the thread breaks easily or shows signs of weakness, it may be best to discard it and use new thread for your sewing projects.

To extend the lifespan of your sewing thread, store it properly, avoid exposure to adverse conditions, and periodically check its quality, especially if you have thread that has been in storage for a long time.

Using high-quality thread from reputable manufacturers can also contribute to the longevity and performance of your sewing projects.