shielding concentric

[cavalry]

Wow...great idea!

[sbalio11]

Graphite with the polymer works well. Resistance should be as low as possible.

[kt315]

I have used Graphit 33 for the shield. I have 4 k Ohm with one coil. Everywhere at the coil.
But the other one has 100 k Ohm at on spot and 14 k Ohm where the wires go into the coil.

Do you think 100k is good enough?

i had answered you CAN economy Graphit 33. just add graphite powder in it. take the graphite FROM ANY old battery, its are like a rod there.

[autitch]

For those looking for graphite shielding paint. I've tested out this shielding paint and three coats is giving 60 to 70 Ohms per inch. It easily goes on XPS foam, wood or paper and it appears to be very similar to what is used on Coiltek Goldstalker range of coils.

Available at the following link and ships from the US to Australia in about 3 weeks.

https://www.stewmac.com/Pickups_and_...ing_Paint.html

AuTitch

[Tibuck19]

For those looking for graphite shielding paint. I've tested out this shielding paint and three coats is giving 60 to 70 Ohms per inch. It easily goes on XPS foam, wood or paper and it appears to be very similar to what is used on Coiltek Goldstalker range of coils.

Available at the following link and ships from the US to Australia in about 3 weeks.

https://www.stewmac.com/Pickups_and_...ing_Paint.html

AuTitch

I cam across the something just last week, when i was looking for a good way to EMI shield a 3d printed box, I ordered a 1/2 pint to test it out, i don't see why it wouldn't work well for coils

[sbalio1]

I used that.graphite pure
resistance 65-45 ohm

.

[sbalio1]

When using graphite with a Pi. Is it necessary to connect with ground wire