What 70 10 Sewing Needles Are For
by Kelsi Watts: The size 70/10 needle is a small needle that is suitable for use with very lightweight fabrics such as sheer fabrics, lace, and fine knits. It's a finer needle than a size 80/12 or 80/11, which are better suited for medium-weight and lightweight fabrics, respectively.
The size 70/10 needle is often used for delicate fabrics that require a finer needle to prevent damage and create clean, neat stitches. It's a popular choice for sewing garments, lingerie, and other items made from very lightweight fabrics.
Sewing machine needles that work on leather
Cutting point sewing machine needles work well on heavy leather materials. For lighter weight leather something like an R point Groz-Beckert sewing needle works well. R point needles are considered sharp enough to punch through light leather quite easily.
About universal sewing machine needles
Style 2020 needles are universal and used for all woven fabrics. 2020 needles will penetrate the fabric threads of woven fabrics. Style 2045 ball point needles are used for sewing on knits, the rounded tip allows the needle to pass between the fabric threads by separating them.

The best universal sewing needle size
The slightly rounded points of the best universal needles are sharp enough to pierce woven cotton fabrics but not so sharp as to damage knits. They come in sizes ranging from 60/8 to 120/19, however, a good starting point is the 80/12 size.
To save money look for assorted needle packs that include two or three different needle sizes.
Needle type that works best on batting
A quilting needle works best on batting because it has a thin shaft. Machine quilting with a quilting needle is ideal for pushing through top, batting and binding materials. The slightly rounded tip and tapered shaft of a quilting needle easily pierces several layers of woven fabric, without damaging them.
Most sewing machine needles are universal
The three most common types of needles are sharp, ballpoint, and universal. Sharp needles work with all woven fabric. A sharp point is especially helpful when sewing straight lines and tasks such as top stitching. The majority of needles are universal needles.
What 80 12 sewing needles are used for
80/12 sewing needles are for use ball point applications with all-purpose thread. Ball point needles are made especially for sewing T-shirt and jersey fabric. Ball point tips don't damage or break fibers when they pierce these types of fabric.
Singer sewing machines use the same needles
Singer quality-crafted machine needles are strong and durable enough for denim fabric hems or industrial zippers. Intended for all-purpose use, with regular point needles for use on woven fabrics, Singer needles are universal, super-strong and fit all home sewing machines.
Embroidery needles vs sewing needles
Embroidery needles have larger eyes than regular sewing needles to accommodate embroidery thread. The sharp tips on embroidery needles penetrate tightly woven fabric and felt better. Embroidery needles, sometimes called crewel needles, are used for crewel embroidery
What the colors on sewing machine needles mean
Most new household sewing needles have two bands of color. The top color band indicates needle type and the lower color band indicates needle size. Special use needles, like those used for hemstitching, double eye, and quick threading, only have one color band to identify needle size.