I would much prefer to find a nice wood or plastic form to use, but haven't
had much luck finding a source of cheap rings, spheres of various sizes.
The polystyrene forms I found are fairly dense and I actually want to make
these items quite light if possible.
Time will tell if it works :)
On Thu, Oct 18, 2018, 6:28 PM Antonio Queiroz <acmdequeiroz@xxxxxxxxx>
wrote:
> Em 18/10/2018 14:36, Matthew Sweeney escreveu:
> > Yeah the tape method is totally not going to work at 300KV+ the corona
> > losses are just too high and as you mention burnishing will deform the
> > underlying polystyrene.
> >
> > The MG chemicals Nickel conductive spray has ridiculously low resistence
> > something like less than 0.005 Ohms/cm and dries to a hard, smooth
> finish.
> > I believe it is also specifically design to spray on plastics, wood etc.
> >
> >
> https://www.mgchemicals.com/products/emi-and-rfi-shielding/acrylic-conductive-coatings-original-series/super-shield-nickel-841
> Just now I noticed the word "polystyrene". This is a bad material for
> anything that has to last, and tape is not going to work well.
> The work needed to harden the surface and produce a good appearance
> turns the problem into a sculpture project, and still
> with a very poor material as base.
> It just shielding is needed, currents are low, and poor quality is
> acceptable, any conductive paint works, even China ink works.
>
> Antonio Carlos M. de Queiroz
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