Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

Plating copper, zinc, or gold onto an styrofoam/epoxy sphere!





2003

I am making a Van de Graaff generator which requires a highly electrically conductive toroid or sphere. Currently I have made an extruded 18" polystyrene foam sphere, and can cover it with epoxy to increase dent resistance. After this, I plan to coat it with an electrically conductive paint. Would a graphite/epoxy mixture be suitable, and is the graphite porous? Then I plan to coat the sphere with copper,using a recipe from www.pupman.com. (search copper plating) Then I am not sure what to do. My dilemma is that the copper oxidizes because hands will touch it,and thus will not conduct as well as I need it to, and if I coat the copper with a lacquer or wax, it will not conduct well either. Is there conductive wax/lacquer? I could coat the copper in nickel, and then gold, but I did not just win the lottery. Would zinc work? I am open to all suggestions,preferably inexpensive ones. By the way, I will be sure to exercise precautions and wear safety equipment. Please help me solve this problem.

Sincerely and hopefully,

Chris Walker
- Spokane, Washington, United States


none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact    -    Privacy Policy    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA