What is the shelf life of sewing thread?

Does sewing thread get too old to use?

Like all good things in life, thread can’t last forever. Though it may look fine, thread can get too old to work properly, leading to breakage and uneven coloring. However, there is no set expiration date for every spool of thread.

How do I know if my old thread is good?

Because cotton is a natural fiber, it will degrade over time. A good test to check whether or not the cotton threads you have been given are OK to use in your machine is to hold about a one foot section between both hands and pull apart. If the thread snaps (you should feel a nice, crisp break), then it is OK to use.

When should you throw out thread?

If you have a stash of very old threads and you’re not sure if they’re still good to use, take a small sample (approx. 6-12”) and try pulling it apart. If you get a clean break, the thread is still good to use. If it shreds or pulls apart like a cotton ball would, then it’s best to throw it out.

Is it better to sew with cotton or polyester thread?

the weight of the thread should match the weight of the fabric. some sewing purist recommend matching the thread to the fibre content of the fabric (cotton thread to cotton fabric) most of the time an all purpose polyester thread will work.

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Should I throw away old thread?

If the thread snaps and makes a crisp break, it’s okay for you to use it. However, if it pulls apart slowly and easily, you might want to toss it away. And, if you’re working with polyester thread, you won’t have to worry about deterioration.

Is cotton thread good for sewing?

Cotton thread is best used when sewing with natural fibre fabrics. The cotton will take lots of heat which is really important when you are pressing seams. Many cotton threads are mercerised which means they have a smooth covering to make them easier to dye and give them a lustrous, smooth, finish.

Can thread dry rot?

If you live in a very dry climate, it can cause your thread to become brittle. In a humid climate, thread can mold or become sticky.