At 01:09 PM 18/01/2013, you wrote:
>Hi all,
>
>For the project I mentioned in my other post, I'm considering making
>my own enclosure. I've become a bit better with that sort of simple
>mechanical design, and it would allow me to build in guards to prevent
>unwanted switch presses and protect cables and connectors a bit. This
>isn't anything really complex, just a bit more than a standard
>rectangular case.
>
>If I go this way, I'll have to use some sort of easily machinable
>material, such as nylon, delrin, or some kind of HDPE. No problems
>there, but since this device will be used with a radio nearby, I think
>it should be shielded to help prevent interference. As a result, I'm
>looking for ideas on how to shield the inside of a plastic enclosure.
>I have found a couple of sprays that are available locally, but I'm
>not sure which is more suited to my application.

Nickel coating is often used commercially.

Look at the difference in resistivity.. 250 ohms/x^2 vs.
0.6 ohms/x^2 for nickel- almost 3 orders of magnitude better.

I guess you could coat it with carbon and electroplate it with
copper.

--sp

--=20
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