Organ Size 12 Ball Point Machine Needles - 135x17 - 10/Pack

The Juki DDL8700 uses the 16x257 needle system. We carry this in the Organ brand, but any brand would work as long as you are using that system. For knits and wovens, use a ball point needle. A size 10-14 needle would work depending on the thickness of thread you were using.

The usual explanation of a ballpoint is that is has a slightly rounded tip that allows it to slide between fibers, rather than pierce them, thereby reducing "runs" in the fabric. Stretch needles have a deeper "scarf," an indentation that allows a longer thread loop to form, increasing the chance that it will be caught by the hook of the sewing machine, and that a stitch will be formed successfully on a difficult, stretchy fabric. Both needles are similar in that they are used with stretchy fabrics, however I would use ball points for heavier knits and stretch needles for lighter fabrics, like spandex.

The size is usually stamped on the needle and can vary depending on the brand of needle. In the 40 and 50s, sizes were standardized to use the metric system to identify the size of needles. The most common sizes are 50, 60, 70, 80, 90 and 100. In other words, it ranges from half a millimeter to a millimeter thick. This is the “higher” number that you see on the packages for needles. The smaller number is the American Equivalent. The best way to find both the needle system and size is to look on the package.

No, unfortunately, the needle system is different than the size of the needle. Each company will use a different needle system, however some of these systems overlap. For instance: DBx1 and 16x231 are two different needle systems, but are the same exact needle. (MNR162*)

The needle system will contain “BP”, “SES”, or “SUK” usually, which will tell you what type of needle they are.

On the package of ballpoint needles that we send out, there will be 1 of 3 codes. BP- stands for ballpoint, SES- is light ballpoint (popular), or SUK- is a medium ballpoint.

For our sewing machine needles, the higher the number gets, the thicker the needle gets. Thus a size 18 would be larger than a size 14.

There are a couple of reasons. If the thread being used was too thick for the size of the needle, or if the material that was being sewn was too thick for the needle, the needle could break. Also, if the needle was inserted in to the machine improperly, it could put strain onto the needle and weaken it.

There are a lot of reasons why this may happen. There may be a burr or a rough spot on the machine that the thread is rubbing up against. It could be a bad needle that is causing the thread to break, The needle could be the wrong size for the thread being used, there could be excessive tension on the thread, or the settings on the sewing machine may be incorrect. Also there could be a different finish on the material that they are working with. Typically, if it was the threads fault, it would be due to there not being enough lubricant on the thread, or yarn defects.