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Omega-style backs for earrings allow your customers to wear a variety of earring designs comfortably and easily.
These single-post earrings always turn on your customer’s ears unless the friction back is excessively tight. Step 3: Place the omega wire loop in its full upright position and remove the rivet wire from the omega back, separating the tempered wire loop from the omega mounting post. Step 6: Place the mounting post in the precise location and position where it should be soldered.
Hold the mounting post in position with welder’s pliers and point the welding probe at the junction.
After firecoating, preheat with a torch and place a chip of easy solder at the junction of the mounting post and the earring. Use fusion findings (prepared and sold by findings dealers) in combination with the ABI Tack II welder to join findings to pieces that require no further soldering.
An important benefit of fusion findings is you can permanently attach them on a heat-sensitive piece – one with a pearl, opal or emerald, for example.
The difference between the standard omega mounting post and a fusion omega mounting post is a nib of metal at the base of the finding. Fusion findings have a small nib of metal on the bottom of the actual piece, while the finding for soldering is flat. Optional Step 8: Some bench jewelers heat (melt) one end of the rivet pin until it forms a bead, then reinsert it and heat the other end until it too melts and forms a bead.

Step 9: After final polishing and cleaning of the omega back and earring assembly, place a minute drop of oil at the junction of the wire loop and mounting post. Information in this article related to temperatures required for tempering of the omega loop is from Greg Todd of Stuller Settings. Our selection of sizes, shapes, and available finishes are so varied, you'll have more choices than you will need. When the backs are installed and adjusted correctly, they also help keep earrings positioned properly on the ear.
Omega backs will keep the earrings properly oriented and can be adjusted to relieve the stress caused by the tight friction back. Hold the omega back assembly against the earring to determine the position of the new post. Check your favorite findings catalog for the one that best suits your customer’s needs and earring design.
Preheat and place a chip of solder at the solder location on the mounting post; melt the solder. Use the torch to heat well below the intended joint, then allow the heat to rise and complete the solder joint. Tack II performs tack welding by resistance; with Tack III, you do a temporary spot weld or a permanent joint.
Hold the pieces firmly together and depress the foot pedal to accomplish a tack weld that holds them in position for soldering.

The heat from the weld is intense but instant, creating a permanent joint without spreading heat and damaging fragile stones.
In this case, remove the loop from the omega assembly and retemper it in an oven set at 650 degrees F for two hours. For more information and a list of dealers for the Tack II welder, call ABI at (888) 494-2663.
There are no visible solder joints, pits or sizing seams between the mounting post and the earring. The transition between the earring and the omega mounting post is smooth, symmetrical and even, with no dimensional reduction in any area. The earring post is properly located in the center of the omega loop when it’s closed. Some have longer mounting posts, while others have small, medium or large loops with a slightly different curvature. With fusion findings, you can use the Tack II to create a permanent weld that requires no soldering. The desired amount of space between the omega loop and the back of the earring determines the proper post length.

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