"Invisible" <voi### [at] devnull> wrote in message 
news:4a0d7fa4$1@news.povray.org...

>>>>> Question: Does acetone disolve backup tape?

> No idea what's it's made of. Some sort of extremely thin yet absurdly 
> strong plastic, but beyond that I couldn't say.

      See below.

>
>>    What happens if you lift the backup tape out of the acetone? Is the 
>> material floppy?
>
> The spool is developing a kind of "cracked earth" pattern on its surface, 
> and there's some ferric oxide floating in the liquid now. But beyond that, 
> the spool and tape both seem as rock-solid as ever.

      Could you lift that ferric oxide out with a magnet?

>
> Perhaps I need to actually unwind the tape from the spool. That'll take a 
> seriously long time though; IIRC, there's about 8 km of tape in there! o_O

     Ah, I see. I've never seen one of these tapes so thought it was either 
like a camera film or something more solid like a plastic disc. I would 
imagine that if you unravel it, it would dissolve far quicker.

      ~Steve~

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