Jig (jewellery)
From Wikipedia, the free encyclopedia
The web site Dictionary.com defines a jig for machinery as "
A plate, box or open frame for holding work and for guiding a machine
tool to the work, used esp. for locating and spacing drilled holes;
fixture."
This definition is not quite accurate for a jig used in making jewelry. A jig used for making jewelry is better defined as "a plate or open frame for holding work and helping to shape jewelry components made out of wire or small sheets of metal." A jig in the jewelry making application is used to help establish a pattern for use in shaping the wire or sheets of metal. In the jewelry application, the shaping of the metal is done by hand or with simple hand tools like a hammer.
History
The use of wire in making jewelry is something that can be seen in Sumerian jewelry from the Dynasty of Ur about 2560 BC. The British Museum has examples of jewelry obtained from the Royal Cemetery of Ur (Iraq) that include wire spirals. Examples of wire and sheet metal jewelry can also be found in Egyptian and Roman jewelry. While we have no examples of jigs or patterns being used to make that jewelry, one can surmise that sometime after the Sumerians, but likely before the Romans that patterns made out of carved wood were use to shape jewelry components.
Since these early times, patterns were known to be used in architecture and construction and were likely to be used in making jewelry. In 1914 the US Patent and Trademark Organization issued a patent for a metal bending jig with moveable pegs to be used in bending rebar in the construction industry. In the middle 1930's some textbooks for making jewelry with wire showed how to make a fixed peg jig by simply hammering nails into a board. Prior to 1990, artists making jewelry were constrained to making their own jig or patterns for making their jewelry. In 1995, a patent was issued to Gary Helwig for a wire bending jig that contained a fixed pattern to be used for making jewelry wire components. As that time the WigJig Companywas founded to make and sell those fixed peg jigs.
The use of a fixed peg pattern was recognized as having limitations and during the late 1990's a vendor developed a metal jig with removable pegs. At about the same time, the WigJig company developed a transparent jewelry making jig with removable pegs. In July of 2001 a patent was issued for this "Transparent jewelry wire bender" (US Patent 6,253,798). At this point, the jewelry making community had a choice of a metal jig or the transparent WigJig Olympus both available options had a square peg pattern with approximately .25 inch spacing between the peg holes.
Modern Products:
After 2001, more jewelry making jig options became available. Several vendors developed metal and plastic jigs with the same basic peg pattern as the WigJig Olympus. In 2003, the WigJig company developed a new jig, the WigJig Delphi, with both smaller pegs (1/16") and a peg spacing of .2 inch; between the peg holes. This jig, because of its smaller pegs and closer hole spacing, is more appropriate for making delicate wire components, including many components for earrings. Later in 2003, the WigJig company introduced the first commercially available jewelry making jig with a round peg pattern, called the WigJig Cyclops and the WigJig Electra. The Cyclops has the smaller 1/16" metal pegs of the Delphi and the Electra has the larger 3/32 inchmetal pegs of the Olympus. Finally, in 2004, the WigJig Company introduced the WigJig Centaur which has both a square peg pattern and a round peg pattern in a single jig. The Centaur uses the smaller 1/16 inch metal pegs.
There are two forms of accessories that are used with jewelry making jigs. The first accessory is rounded pegs in larger sizes. These pegs are shaped like mushrooms, with the stem of the mushroom fitting into a hole in the jig. The top of the mushroom forms a larger diameter surface for shaping wire around the circumference or a portion of the circumference of the peg. These larger diameter pegs generally come in sizes from 3/16" to as large as 2". Because the pegs must fit into one of the holes in the jig, in general the different vendors pegs are not interchangeable.
The second optional accessory that can be purchased for a jewelry making jig is an accessory to make spirals.
There are many techniques for making jewelry using a jewelry making jig. Most of these techniques can be termed by the name wire wrapping. This name for making jewelry by hand refers to the fact that instead of using solder or glue, wire components using this approach are connected to one another using the same techniques developed prior to the Middle Ages of wrapping wire around itself to permanently fix a loop in wire and to connect wire components. Techniques for wire wrapping that are commonly used today can be seen in Roman jewelry and in Egyptian jewelry dated to 6 and 7 AD. While the wire used at that time was not modern wire, the techniques to use that wire are still valid today. At present, we have improved on these ancient techniques through the use of modern materials and jewelry making jigs with removable pegs.
Reference:
- WigJig company archives.
- US Patent 6,253,798
- "Interpreting the Past -- Ancient Jewelry" by Jack Ogden, ISBN-0-520-08030-0, dated 1992
External Links
A site with over 2,300 free web pages of instructions and patterns on making jewelry with wire and bead and a jewelry making jig.
A site with information on making jewelry by hand.
A site with TV shows on making jewelry by hand.
