Aluminized Mylar As replacement for Carver Ribbons

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OK I filled it the break - and I could see it was broken through, right @ the edge of the end where it goes under the clamped wood pieces - and I am getting 200+ ohm, the other 3 read 4 ohm.
The circuitwriter is supposedly very low resistance ... what gives.
Atleast I went form open to 200 ohm.
Cool.
Srinath.
 
Aluminum

OK, don't laugh, but this is what I have used on a few experiments. Thickness is .5mil (12 .7 microns to be exact). Aluminized mylar. Turns out this place is 7 miles from where I live (no pickup tho)

I have enough to make about 144 Martin Logan CLS sized ESLs for $38.

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This has aluminum in it, I have to mask and remove the thing in the locations I dont want it and then put plain mylar on it and seal it up and hen wrinkle it right.
I dont need to put aluminum on, it need to controlledly remove it.
Cool.
Srinath.
 
You can mask and etch out the aluminum where you wish not have it, and what you will have left is the base mylar.

I have read that some have used Citric Acid, Acetic Acid, or lye (Drano) to remove the layer of Aluminum. I have not yet tried it...
 
I actually believe it or not have a very good collection of chemicals to etch metal, I did rust proofing/coating motor cycle gas tanks for many years ... Lye may be the best option for me, I have it as crystals which I can mix with water and spray.

My thought is I should use something that works very fast, else it will soak through the masking tape and tear it up under that too ... however I have a question -

Can you hand sand it in the wide swaths except in the middle of the ribbon with something like 2000 grit sandpaper. Then all that's left in that lin line in the meddle, which too I may mechanically remove by a fold and sand method.

Cool.
Srinath.
 
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