Antonio,I've tried to make spheres with conductive paint https://www.bareconductive.com/. You need a very good surface for the paint to adhere and to give a smooth end finish. I haven't tried spray painting, but I'm told it is possible.
I'd start with a primer on to the polystyrene, to seal, give you a good surface finish and help the conductive paint to adhere.
I found that diluting the conductive paint 50/50 gave the best finish on to a smooth plastic surface although with a higher resistance than 100% paint.
I would love to see your results.. Derek On 15/10/2018 19:35, Antonio Queiroz wrote:
Em 15/10/2018 11:39, Matthew Sweeney escreveu:Adhesive aluminum tape is good for this purpose. No need for any priming and the result is quite good.As title suggests, I'm planning as follows: 1. Various sized cheap polystyrene rings (e.g 4x1 inch) 2. Prime with nickle or graphite spray paint. 3. Brush copper plate. 4. Polish/BuffThe purpose is for primary charge induction and trap terminals in a Kelvinthunderstom machine, and for investigating constuction of cheap Corona rings. Has anyone tried this method previously, or have anysuggestions/recommendations? Note this is intended as a cheap method evenIf the results are not 'perfect'.Antonio Carlos M. de Queiroz _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxxxxxx https://www.pupman.com/mailman/listinfo/tesla
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