- 1). Know that most readily available machine needles are sized from 9 to 18 - the smaller the number, the smaller the needle. This remains true, even if the needles you purchase use a different numbering system.
- 2). Use standard sharp sewing machine needles in sizes 11 to 14 for most sewing projects. A smaller-sized needle is best for sheer or lightweight fabrics. Sizes 16 to 18 are used for heavyweight fabrics like denim.
- 3). Use ball-point machine needles to sew knits or other stretchy fabrics. Their blunt edges allow the thread to pass between the fabric's fibers rather than through them. This is crucial for maintaining the fabric's elasticity.
- 4). Use wedge-point machine needles to sew leathers, suedes and vinyls. The shape of this needle will create a slit (rather than a large hole) through which the thread will pass.
- 5). Change your needle at the start of each project. A worn or damaged needle will cause skipped or uneven stitches and may damage your fabric.
- 6). Purchase a package of assorted needle sizes if you are unsure which is appropriate for your fabric.
- 7). Test the various sizes on some scrap fabric until you determine the correct size to use.
- 8). Check the label on the needle package before you make a purchase. For most brands, there will be a sizing guide that will tell you which fabrics can be sewn with the enclosed needles.
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