Preparing the Jump Rings
Apply Electro flux to the open ends of the jump rings.
Close jump rings,making certain that no gap exists.The ends should be neatly butted together for a secure connection and proper solder flow.We recommend an Optivisor™ for a full view of the contact point.
Clean off any remaining flux with a dry paper towel.This will prevent arcing and allow the solder to flow more freely through the joint area.
Operating the machine
Press the red switch on the front left of the machine to turn it on.
Start with a dwell-time setting between 2 and 3 on the timer.The timer is calibrated in half-second increments up to three seconds.See the table below for time and power setting guidelines.Different rings require different times.
Set the temperature knob to approximately 2.5;start low and slowly increase as needed to flow solder.If the ring and electrode arc or if the ring burns,reduce temperature until the ring just heats.
Hold the pliers in one hand and grasp the jump ring to be soldered.Position the pliers so that the jaws contact both sides of the ring (see Figure 1).
If necessary,apply paste solder to the joint on the jump ring.Solder-free rings require added solder;solder-filled rings do not require added solder.
Pick up the handpiece with the other hand,and touch the electrode securely to the jump ring.Be certain to make full contact between the electrode and the ring being soldered. Important: The electrode must be smooth and free of debris (see Figure 2).
Press the foot pedal until the timer runs out.The metal should redden and the solder should flow.If it doesn’t,go back to step 1,increase the power slightly and follow steps 2–6 again. Power will cease when the timer stops,even when the foot pedal is depressed.
When the solder cools,clean the solder joint with a polishing wheel,light emery stick or emery paper.
Figure 1: The power current output will vary depending on how much contact there is between the pliers and the jump ring.The ring on the right will heat faster than that on the left because of its greater contact area.
Figure 2: Reshape the electrode with a sharpener when the tip becomes worn or rough with solder debris.Sharpeners come with a holder that fits snugly over the handpiece and centers the electrode over the sharpener.
The suggested time- and power settings for the silver solder-filled jump rings included with your Hot Spot are below.Please Note: These settings are only guidelines.You will need to vary the time and power settings to achieve combinations appropriate to your applications.
Sterling Jump Rings solder-filled #693-407, #693-408, #693-409
Gauge 20 gauge