A bobbin is a spindle or cylinder, with or without flanges, on which wire, yarn, thread or film is wound. Bobbins are typically found in sewing machines, cameras, and within electronic equipment.

As used in spinning, weaving, knitting, sewing, or making lace, the bobbin is a temporary storage reel for the thread and may be made of plastic or metal. Very old bobbins may have been made of wood.

In the case of a transformer or inductor, the bobbin is a permanent container for the wire, acting to form the shape of the coil (and ease assembly of the windings into or onto the magnetic core). The bobbin may be made of thermoplastic or thermosetting (for example, phenolic) materials. This plastic often has to have a UL or other regulatory agency flammability rating for safety reasons.

Other uses

• Bobbins can also refer to narrow braid formerly used as trimming.
• The term 'bobbins' is sometime used to express distaste, for example, "that's a load of bobbins".
• The term Round Bobbin is used in computing to describe a process which writes its output back to its input source.

External links

• Bobbins and Cones for Textile Spinning
• The Craft of Bobbin Making

Sewing | Cameras