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Is it possible to use old cassette tape's and/or floppy disk's "film" to make circuit boards? Answered

Is the magnetic film inside these old media conductive enough to replace the copper, and if so, would it be feasible to glue strips of tape/disk onto some plastic or cardboard and then attach (?melting/soldering?) electronic components to it?

Discussions

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caitlinsdad

3 years ago

The easiest way to tell is to test it with a battery and bulb like from a flashlight. Make a simple circuit. Experiment and observe. They do sell conductive copper tape or aluminum foil tape that you could use instead.

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trocatintascaitlinsdad

Reply 3 years ago

Thank you for replying.

I've now tried with the multimeter and nothing (even piercing through the film with the probes).

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KISELINtrocatintas

Reply 3 years ago

Allmost ewery PCB, (Printed Circuit Board), are manufactureded in the way that the PCB have a solder-resist layer on it. Therefore if you try to measure volt/res just by pinning your DVM-pin to the object, want give you the actual reading. You should use some force or scrape the surface to get to the real surface, and ewen here you stumble with many other poss.. it might be a multilayer layout where you "just" can't make the measurements

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ptkrf

3 years ago

Likely not. Due to many reasons. If you want flexible circuit board, I would recommend you to use something like pureConductive (conductive paint) on plastic foil. I think someone here on instructables even published an 'ible on makind DIY conductive ink

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KISELINptkrf

Reply 3 years ago

GEEE... got my first set of making my OWN flex-PCB YIPEE.... that is: I can make my own these, (what you call, not touch, but sealed panels), guy's, go on this road. Feel free to contact me at kiselin@2me.fi, no charge no nothing, just another enthuistic on the subject

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KISELINKISELIN

Reply 3 years ago

PS: my spelling is not correct, but of course it has to be touched (push the button) :))

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trocatintasptkrf

Reply 3 years ago

Thank you for reply.

I think I'll have a go at this one: http:// www .instructables. com/id/1-DIY-Conductive-Ink/

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mpilchfamily

3 years ago

If it can conduct current it will have such high resistance as to be unusable. Plus there is no way to solder to it.

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trocatintasmpilchfamily

Reply 3 years ago

Thank you for replying.
So I guess I will have to think of other ways to recycle that stuff.
I was looking to do something other than decorative props.

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KISELIN

3 years ago

Yes, but the physical lenght of X wide tape would be.... a C-tape have a thicknes of say...?? 0.01mm multiplied with the speed of what it runs ower the "READING"-heads.. multiply that with a time... and you get a "propotional" picture for what you trying to get. Still, the easyest way to re-them tapes is the conventional way to do it

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KISELIN

3 years ago

No you can't. It's kind of same if you try to copy the energy of a "Lifhting" on to a CD-disk to store the energy of it, to be reused later on.

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KISELINKISELIN

Reply 3 years ago

PS. It should say "lightning" in the thunder storm

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Downunder35m

3 years ago

Why do you think that because something is magnetic it would also conduct electricity?
Google and Wiki can tell you how the disks are made and what materials used.
And you can't solder plastic ;)

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trocatintasDownunder35m

Reply 3 years ago

"Chromium dioxide is a metallic
solid , with an excellent electrical conductivity over a wide
range ; moreover , its conductivity is that of a true metal
(inverse electrical conductivity–temperature relationship) ,
similar to that of the common metallurgical metals ."


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Downunder35mtrocatintas

Reply 3 years ago

It is not metallic, chome itself is a metal, an oxide is usually not a metal but a crystal.
Although it conducts electricity, like ferrite it is suspended with plastic of the tape acting as a binder.
You have every crystal isolated from the next, otherwise it would not work for storing data.
So It really does not matter what you try there will be no conductivity.
Back in the day I had some metal tapes for specail uses - they were made from a metal stirp covered with a protective plastic film.
Chromium oxide is brown, if you tape does not look like shiny metal it won't conduct.

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KISELINDownunder35m

Reply 3 years ago

Wow... you are both right and wrong at the same time, yes chrome is a metallic based on the basic-table of prime-them??? and as well is the Oxygen. But the combination of these two is something quite else. Oxygen+ something wery often results in something else that you started with, (e.g. explosion, implosion)

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trocatintasDownunder35m

Reply 3 years ago

Thank you for Replying.

Although CrO2 is supposed to be good conductor, I can't even get a read on the multimeter.I guess it's enveloped by the plastic coating or something like that. :)

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KISELIN

3 years ago

Really??? To convert them c-tapes to whatewer format yuo wish is a flip of a ye-blink, but the problem layes in the thing to do that? Actually you need to "PLAY" in REAL time to copy it to your conputer (hmmm.....Ohh....) do I have all this time to consume? Check www..teksel. net I made a tab there to separate them