Each needle has a number of barbs that catch the fiber as it is pushed through the project. This causes the fibers to become entangled to make a solid felt. The greater the number of barbs, the faster the project will felt.

The term “Gauge” simply refers to the thickness of the barb. There are many tables on the web that will let you convert from gauge to millimeters or inched but for the craft felter, its really not important. Gauge is a simple whole number that’s easy to remember. The confusing part about gauge is the larger the gauge, the smaller the shaft size. I.e. a 32-gauge needle will have a larger shaft diameter larger than that of a 42-gauge needle. Also, keep in mind that the larger the shaft size, the larger to whole left in your project. For quick felting, 32 gauge 9 point needles will felt quicker than 40 gauge 3 barb needles. The 40 gauge 3 barb needles will, however, leave a smoother service.

Felting needles are very delicate and break easily if not used properly. They designed to go into industrial machines that hold thousands of needles at a time and operate in an up and down motion. Using your needles at a sever angle, twisting manor or in a manner that would cause them to bend can cause them to break. Also, take care that the pad you felt on is thick enough to allow the needles to not hit the hard surface under the pad. This is the quickest and most common way to break needles. Felting needles are for dry felting and will rust if exposed to water or moisture.

If you are purchasing needles for a multi needle tool or felting machine, please ask before you purchase to make sure they will fit.