Electronics > Projects, Designs, and Technical Stuff
Copper foil from ebay
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prasimix:

--- Quote from: Bud on November 04, 2018, 09:08:23 pm ---Being sold as "Guitar pick up foil", thay may mean the sound can "travel in the tape"  only in one direction or for the "bidirectional" flavour of it in both directions   :D. Audiophools certainly know that.

--- End quote ---

Huh, this is a good one :).
Mechatrommer:
then you tell me how it can improve anything by taping it on the guitar's body? will it sound better than curt cobain's guitar?


and it can protect from slug and snail as well, maybe due to some type of earth resonance?...


https://www.ebay.com.my/itm/Guitar-Pickup-Copper-Foil-50mm-x20m-Shielding-Screening-Tape-Conductive-Adhesive/362431461195?hash=item546299374b:g:1kYAAOSwl75ZuIbI:rk:12:pf:0

joke aside. i think i will be interested at getting one of this (not for audiophoolery) but i believe there is clear lamination on top of the copper to avoid oxidation. i dont want it i want naked copper that we can directly solder on. if anybody know an easy way to strip that off with some chemical that will be interesting. one application is gluing it to a specified dialectric material (ceramic ptfe anybody?) so we can make our own RF grade pcb or such, RF pcb on the market is audiophoolery grade of price.
coppercone2:
how to tell: sand paper should do it. Just rub on it with sand paper till you get through to the paper side, it should at least tell you if its plated. As for if its electrical copper? No clue, resistance measurement maybe.
thermistor-guy:

--- Quote from: Mechatrommer on November 04, 2018, 11:47:58 pm ---...
joke aside. i think i will be interested at getting one of this (not for audiophoolery) but i believe there is clear lamination on top of the copper to avoid oxidation. i dont want it i want naked copper that we can directly solder on. if anybody know an easy way to strip that off with some chemical that will be interesting. one application is gluing it to a specified dialectric material (ceramic ptfe anybody?) so we can make our own RF grade pcb or such, RF pcb on the market is audiophoolery grade of price.

--- End quote ---

I bought some adhesive-backed tapes - kapton, copper, polyester - to experiment along the lines you mention. E.g. a low-impedance, flexible, cut-to-shape power bus with kapton/copper/kapton/copper/kapton layers.

I also bought a silver (conductive) ink pen, to see how practical it is to make a small-ish circuit on layers of tape. Punch holes in the correct tape layers (different pattern for each layer), draw the traces on each layer, let dry, stick the layers together, add ink to connect the layers, let dry. Ink in the component pads, add components, let dry. Connect the pads to traces, let dry. Result: a low-cost multi-layer flexible PCB with good rf properties. As many layers as I want.

It's only an idea at the moment, but I have uses for it if it works.
Mechatrommer:

--- Quote from: thermistor-guy on November 05, 2018, 12:37:11 am ---I also bought a silver (conductive) ink pen, to see how practical it is to make a small-ish circuit on layers of tape....Ink in the component pads, add components, let dry....
It's only an idea at the moment, but I have uses for it if it works.

--- End quote ---
no it wont work. i have silver conductive ink it too fragile to hold anything even a single strand of wire, it will peel off, have done that. it only usefull at connecting broken traces. or you may glue your component with something else before tacking it with the ink. it might work never done that.
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