Copper Foil Tape

[homefire]

I have some of this coming. Going to give it a shot. Anyone used it before ? Think I seen something about it a while back but can't find the post.

http://www.banggood.com/10mm-X-20m-E...l?rmmds=search



Homefire

[SVEN1]

That's all i use. And you are getting the correct one with conductive adhesive. The tape does break easy if not careful when winding. Not an issue since the adhesive is conductive.
There is also another foil tape with non-conductive adhesive, more commonly stocked by many electronics stores and sold on ebay.
When the tap arrives, use your multi-meter to make sure the adhesive is conductive. As I believe the inner core will be green and not white on the roll with conductive adhesive.

[homefire]

Good Stuff thanks for the Reply. Emmmm Wonder why they made the adhesive conductive ?

[SVEN1]

Probably because it so easy to tear the paper thin copper tape. If you tear it, just start the new piece of tape over top of the torn off piece and you still have conductivity. This is especially helpful when winding the copper tape as a Faraday shield around a search coil wire bundle. There's no break in conductivity, if you tear......and repair. Oh the copper foil tape is solderable. Non conductive copper tape is used in many projects such as those who create stained glass. Also works good when you can't ground solder a wire to an aluminum box and you don't want to drill and tap a grounding stud. Just place a piece of tap on the box and solder your ground wire to it.

http://multimedia.3m.com/mws/media/8...lding-tape.pdf

[multieagle]

Aluminum tape....

The last few coils I experimented with aluminum tape. Unfortunately (maybe) it does not have conductive adhesive. Before pulling my hair out, decided on a small test. Tore off two 31cm strips (about 25.25" each). Then tore one of the strips into four pieces. I wound them onto two chopsticks (only things handy at the time).

When tested with my multi-meter: yields 0.4Ω on both winds (measured on the outside). What am I missing?

[homefire]

Confused I am. What are you asking here ? About the Resistance of the foil ? .4 ohms could be your test leads. Make little difference. The Shield could have a few hundred Ohms and still work fine.

[multieagle]

Confused I am. What are you asking here ? About the Resistance of the foil ? .4 ohms could be your test leads. Make little difference. The Shield could have a few hundred Ohms and still work fine.

Was referring to conductive/non-conductive adhesive on tape. There was a suggestion that covering a tape break with non-conductive adhesive would not produce a valid Faraday coil shield. In this experiment it does not seem to matter. But might in a completed coil? I have three coils made thus, great depth, but probably useless in highly mineralized soil. Can't get outside to test ... too much snow and cold.