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Shielding in plastic enclosure: conductive coating, tape/fabric, foil, or what?

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I wanted a rude username:
The conductive paint on the inside of an Apple IIe's plastic enclosure got me thinking: what's the best way of shielding devices in plastic enclosures if your production runs are so small that conductive coatings are not cost-effective due to the time and complexity?

Nickel-copper conductive fabrics were once used for this but I haven't seen a device with them in a while. They're also available in tape form.

What do people end up using for thing like homebrew test equipment?

thm_w:
Why do you say not cost-effective due to time and complexity? You can buy them in small volume in spray cans:
https://www.eevblog.com/forum/oshw/open-source-hw-rf-signal-generator/msg2900484/#msg2900484

The other option is copper foil or aluminum foil tape, first one you can solder to relatively easily.

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