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topic 9456

Iron Electroforming


Can anyone provide me with a formulation for low stress stable ductile iron electroforming in thicknesses up to 0.5mm? I know it is possible from sulphate, sulphamate, chloride or fluoborate baths but I have to rule out the chloride and fluoborate baths for environmental/corrosion issues.

Robert Chilton
R.A.Chilton - Chester, UK


I don't believe you will find one.

tom pullizi signature
Tom Pullizzi
Falls Township, Pennsylvania


19-th century formula! 40 gm iron sulphate 200 gm potassium sodium tartrate 0.4 lit ammonia 25% 0.6 lit water

Goran Budija
- Zagreb,Croatia

August 24, 2010

Q. I need some pure iron in tube form. Will I succeed trying to plate onto, for instance, a wooden dowel coated with carbon dust?

Paul Roberts
- United Kingdom

March 15, 2011

A. A wooden dowel wrapped in copper foil will do. Make sure you have a rag slightly oiled and rub it on the foil exterior. It will have no adhesion.

Mario Tabernig
- California

October 19, 2012

Hi Paul. Another approach used for complicated shapes, where you can't slide the iron electroform off of the mandrel, is to make the mandrel out of aluminum and dissolve it out with caustic soda. Good luck.


Ted Mooney,
Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey

April 3, 2009

Q. Hi!, "iron being plated on copper" is the same experiment we are working on at school. The problem for us is that we are trying to obtain the most uniform layer of iron possible on the copper wire. Is the process of electrochemistry sufficient to deposit a uniform layer of at least 95% percent yield? or is there anything we can add to compensate for a uniform surface area?

Ana-Patricia Lopez [last name deleted for privacy by Editor]
- Chula Vista, California, U.S.


A. Hi, Ana.

Plating thickness is directly proportional to current flow (see Faraday's Law). So, to get uniform distribution, the most important factor is to supply uniform current density through optimum placement of anodes and non-conductive shields. Good luck.


Ted Mooney,
Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey

August 6, 2009

Q. Hi Guys,

Can one electroplate iron on gold as well as it can be done on copper?

Kind regards,

Chris Rogers
- Toronto, Ontario, Canada

April 29, 2012

A. According to "The Electroplater's Handbook" [link is to product info at Amazon] iron and gold do not bond well together. You'd want to plate a layer of copper on the gold before plating with iron.

Usually people want to plate iron with gold, not the other way around.

Duane Degn
- Chubbuck, Idaho USA

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