Rhodium tank plating on silver jewellery

Rhodium tank plating a silver ring

With our Rhodium Tank Plating Kit, you’ll be able to rhodium plate items of silver or white gold jewellery to specific thicknesses with ease.
We’ve designed the process so that you can pre-programme in the rectifier settings before you start plating. This means that once you start plating you don’t have to adjust the equipment, leaving you free to let the plating get on with itself.
To work out the amp level, multiply the surface area of your work by the plating factor for rhodium, which is 0.02
In this case, we estimated that the surface of the ring was 4.5 cm2
The calculation is therefore 0.02 x 4.5 = 0.09 amps, so the amp setting on the large rectifier needs to be set at 0.09 amp.

1. Setting up your Rhodium Tank Plating Kit

Set up the Rhodium Tank Plating Kit as shown. Turn on the Hot Plate Stirrer and bring the temperature of the solution up to 38-42 degrees centigrade and set the stirring function to minimum.

Please be aware that our Rhodium Tank Plating Solution can only be shipped within the UK and the EU. If you want to order from outside these areas, you might consider ordering our Palladium Tank Plating Kit as palladium plates with a similar whiteness to rhodium and can be shipped anywhere in the world.

2. Connecting the Black Leads

Black leads x 2 (one short, one long) Plug the short black lead into the black socket on the Economy Plating Rectifier and then plug the other end into the black socket on the large rectifier. Take the longer black lead and ‘stack’ it by plugging one end into the back of the black lead you’ve just plugged into the large rectifier. Plug the other end into the socket at the base of the Plating Stand.


3. Connecting the Red Leads

Red leads x2 (one short, one long) Plug the short red lead into the red socket on the Economy Plating Rectifier and then fix a crocodile clip to the other end of the lead and clip it to the mesh on cleaner beaker. Plug the long red lead into the red socket on the large rectifier and clip the other end to the mesh on the rhodium beaker.

4. Pre-setting the amps. a) Adjusting the voltage on the Tank Plating Rectifier

Make sure output is off (open). Adjust volts to within a range of 3-3.4

Pre-setting the amps. b) Shorting out

Short out the circuit by attaching the red lead to the plating arm.

Pre-setting the amps. c) Turning on output

Return to the Tank Plating Rectifier and turn on the output.

Pre-setting the amps. d) Setting amp level

Adjust amps to desired level (in this case 0.09).

Pre-setting the amps. e) Turning off output.

Turn off the output.

Pre-setting the amps. f) Connecting red lead to rhodium beaker

Re-connect the red lead to the mesh electrode on the rhodium plating beaker.

Pre-setting the amps. g) Adjusting voltage cleaning

Adjust the voltage on the small rectifier for the cleaner stage to 4.5

5. Power Cleaning

Place the ring in the Cleaner and touch the jigging wire (which is holding the ring) against the crocodile clip. Almost immediately you’ll see bubbles forming, meaning that the Cleaner is getting to work. Leave your work in the Cleaner for 15-30 seconds and you will have a perfectly clean, water-break free surface which is ideal for plating. Once it is clean take it out and dip it in the first and second rinse beakers to thoroughly rinse off the Cleaner. Please see our previous project, ‘Gold Plating a Ring to Vermeil Standard’ for further information on this stage.

6. Rhodium plating

Hang your ring in the rhodium plating solution (check that the solution is at the optimum temperature) and then turn the output to on as soon as possible.

7. Final rinse stages

Once the plating time is up, turn the output on the rectifier to off and pass the ring through the last two rinse stages.

8. Finished ring

The ring needs no further finishing as our system deposits a durable layer of rhodium that can be easily maintained for many years.

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