Jump Ring Mandrel For Drill

This set consist of 20 plated steel mandrels sizes range from 2 5mm to 12mm.

Jump ring mandrel for drill. When i worked in a factory in pforzheim we would use a specialized jump ring winding tool which was essentially a kind of fancy hand drill with gearing and a jacobs chuck. Pound your little nail into the wood just to one side of the hole. Then secure your new jump ring mandrel to your work table or wherever else you plan for it to live. Stretch the mandrel either by clamping one end in a vise and hold the other end in a pair of draw tongs and give a quick and firm jerk or stretch it in the draw bench and voila the coil of oval jump rings comes off like butter.

When i worked in a factory in pforzheim we would use a specialized jump ring winding tool which was essentially a kind of fancy hand drill with gearing and a jacobs chuck. Clamp the drill handle into a vice and chuck the mandrel into its jaws. To get the rings off the mandrel anneal the rings on the mandrel and here comes the real trick. The resulting coils are then cut using a jeweler s saw.

Kink the end of the wire to a right angle and slip it into the jaws of the chuck. Carefully feed the wire onto the mandrel while slowly and steadily cranking the drill. Take a mandrel in the correct diameter for the size of jump ring you want to create and your chosen wire. Your only real material needed is your round rod to serve as your mandrel.

These mandrels are zinc plated to prevent corrosion and last for years. You can make a jump ring coil by using an old fashioned hand drill to hold the mandrel. These can be used to attach charms to bracelets build chains for jewelry or simply to attach clasps. Each full loop will create one jump ring so continue until you ve created enough loops for the number of jump rings you need.

You want it affixed to something as you need two hands to operate the mandrel once it is in use. This creates a superior jump ring that closes smoothly and neatly. Wrap your wire around the mandrel keeping each loop close to the previous one. If you don t have a drill bit that is exactly the size of your mandrel drill a slightly smaller hole and enlarge it to the right size with a file.

We used copper and brass mandrels in the cross section of the required jump ring ovals rounds and so on. The wire is wrapped around a mandrel to make spring like coils. Drill a hole in your piece of wood that is exactly the size of your mandrel 1 4 in the picture. We used copper and brass mandrels in the cross section of the required jump ring ovals rounds and so on.

Pepetools jump ring maker mandrels that are included with the jrm2 jump ring making kit now sold separately.