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Cool-Amp silver plating

I introduce silver plating by the Cool-Amp as the Eliminate Oxidation of a printed board on this page.

Mr. Hans Wedemeyer introduced me the Cool-Amp.

I demanded the free sample to the Cool-Amp company and acquired it. In May 2002, the distribution of the sample seems stopped.
The details see the following page.

The home page of the Cool-Amp company.

About the Cool-Amp

The Cool-Amp was developed in the purpose to make a good electrical contact between two bolted or stationary pieces of copper, brass, or bronze connections. It silvers the aspect of the connection and it diminishes a contact resistance.
It is to apply powder to the connection surface only without needing special equipment and that it is possible to do silvering that are epoch-making.
In addition to contact resistance's decreasing, there is a preservation effect(Eliminate Oxidation).
I used this in the purpose of the preservation.


Mr. Hans explained to me the following instructions.

When using the Cool-Amp for the printed board, it applies before drilling holes.
Place a little Cool-Amp powder in a separate flat container, this way you do not contaminate the stock powder.
Keep the Cool-Amp in a dark place when not using it. OK to use in normal light.
Make a small pad of cloth, moisten pad with water. This you will dip into the powder. Then rub in small circles all over the printed board. Keep pad moist and keep dipping when you need more powder.

Work on soft surface. I place a paper towel on my work surface and place the printed board on it, then the bottom side of the printed board does not get scratched.
Keep rubbing the Cool-Amp onto the printed board and in a few minutes you will see the surface changes to a dull grey and as you continue it becomes bright silver. I rub for extra 2-3 minutes to makes sure the coating is thick.

Wash in water. Dry, Drill, Assemble... Soldering is just as normal.

The instructions of the Cool-Amp which is attached to the sample is shown below.
The Cool-Amp deals with the electric installation. It isn't mentioned about the application to the printed board to the instruction.
In the following instruction, the item which doesn't have relation in case of the printed board makes the color of the letter thin.


This is the "Cool-Amp" method of making a good electrical contact between two or stationary pieces of copper, brass, or bronze connections.

    "Draw-file" a few strokes across contact surfaces to find and remove any unusally high spots. Thoroughly remove any grease or grime deposits.
    Polish thoroughly with a sharp steel wire brush. If this is not practical, such as in fuse and switch clips, use abrasive cloth.
    Wipe surface thoroughly with clean dry cloth. Don't overlook edges and holes. Keep fingers off surface.
    Silver Plate - With a clean cloth, make a pad about the size of a silver dollar. Moisten pad with clean water. Apply by alternately dipping pad into "Cool-Amp" "silver plating powder" and rubbing firmly on the contact surface. Continue until the whole surface passes from a dull white cloudy color to a slightly polished silver. With a cloth wipe off all paste from surface, edges and holes.
    Thoroughly wash surface, edges and holes with clean cloth, dipped in clean water. Rinse with another clean cloth dipped in clean water used for rinsing only. Rub dry with clean dry cloth. On a large job, renew cloth and water often, as washing and rinsing properly is the secret to success in any plating process.
    The result should be a clear white polished silver finish.
    Any silver plated surface that has become discolored or tarnished, due to age, or weather, can be restored by the 4th and 5th step.


Wash hands before placing them on silvered surface, as particles of paste or powder on them will spot the silver. Some problems may arise, but a little ingenuity will always solve it. Such as a tooth brush to silver a threaded stud and a thin wood paddle with rag, between switch clips. A soft paste, made with table salt and vinegar, applied with a tooth brush will clean threaded copper studs or other irregular forms, but must be washed off before silver plating.

Before application
(Immediately after mask pattern removal)
With the photograph on the left, the white powder in the upper right is the Cool-Amp.

During application

Ending application