5 Things to Know Before Buying Gold Plating Machine For Sale

Electroplating &#; relates to plating over metal surfaces.

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Electroforming &#; relates to plating over non-conductive surfaces such as plastic.

Tank plating &#; a form of plating whereby the object to be plated is fully submerged in plating solution inside a tank. Tanks are fitted with specific anodes which work in conjunction with the plating solution.

Mini tanking &#; a much smaller version of tank plating which is limited to coin/ring sized metal items only. Parts are plated in small pots or containers, generally using 50-100ml of plating solution.

Brush plating &#; a form of electroplating whereby plating solution is brushed over a surface using a brush plating wand.

Pen plating &#; a form of electroplating whereby plating solution is applied to an surface via a pen plating wand fitted with a plating nib. Pen plating is a similar concept to brush plating, but this technique only allows for the plating of very small areas. Great for detailed work or selective plating on small sections of an object.

Anodes - metal sheets or rods that are placed inside a plating tank. Metal sheets are used for full tank plating, rods are often used in smaller tanks such as when mini tanking. Anodes are electrodes that provide a positive electrical charge to the plating solution. 

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I&#;d like to know just what the electroplating process is.

G&#;day Brian and others; Put simply and reasonably briefly it is the
process where a piece of a pure metal which is to be plated upon
another is place in a suitable solution which conducts electricity,
and the object to be plated, which must also conduct electricity or
have a conductive coating upon it, is placed in the same bath of
solution, called an electrolyte. In the case of plating silver or
gold the electrolyte is usually a cyanide but there are other salts
which are used these days. The piece of pure metal is given a
positive electric charge and the object to be plated is given a
negative charge. Now the atoms of the metal have a natural positive
charge, so are attracted to the negatively charged object.

The electricity may come from a battery, a battery charger, or a DC
generator. It cannot be directly from an alternating current power
supply. The battery charger rectifies it - that is allows the
current to pass in only one direction, and a good charger or plating
unit will have a special circuit to smooth the current properly. The
voltage applied across the plating bath depends upon a number of
variables, but suffice it to say that 6 to 12 volts is usually
sufficient, although it depends upon the size of the object, etc&#;
The circuit must have a device to control the amount of current moving
the metal ions, and so a device to measure that current in the form of
an ammeter or milliammeter is necessary. If too much current passes
the plating will be coarse, porous and not very adherent. If too
little passes then the plating will be very good, being fine and
coherent, but will take a long time. Temperature control is also
very important, and must be kept constant to a certain degree. Quite
often plating is improved by the addition of a very tiny amount of an
&#;improver&#; which sometimes is a complex salt containing sulphur

I have done electroplating with gold and silver using a battery
charger connected to a 240v AC supply via a light dimmer control,
giving a maximum of 12 volts. I used a milliammeter to show me what
the current flow was like, and I usually plated at around 20 - 25&#;C.

Plating involves quite a lot of preparation, especially cleaning the
object to be plated and giving it a preliminary &#;strike&#; bath before
plating proper begins. There are many books on the subject and I
strongly suggest that anyone who is thinking of doing their own
plating jobs do read up thoroughly on the subject - it isn&#;t quite as
simple as it all looks at first! > > I&#;m hoping I can adapt my
anodiser or make a power source here.

An anodiser would probably work quite well, but I have to admit I
have never used one. Cheers, &#;

John Burgess; @John_Burgess2 of Mapua Nelson NZ

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