Magnentic Scrolls tapes rescued

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Dave
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Re: Magnentic Scrolls tapes rescued

Postby Dave » Sun Jul 02, 2017 7:12 pm

ABS (case) melts at 105C. Nylon (spool) melts at 220C. Polyethylene terephthalate (tape) melts at 260C.

I think I'm good at 75C.


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Outsoft
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Re: Magnentic Scrolls tapes rescued

Postby Outsoft » Sun Jul 02, 2017 10:08 pm

Dave wrote:Here in Texas, close to the Gulf Coast, typical humidity is >65%. Some microdrives get kind of "lumpy" and don't turn smoothly - there are fluctuations in the friction. Also, the capstan sometimes slips and picks up magnetic material. I know this is what is happening as I can measure the amps drawn by the motor and the current increases and decreases.

It seems removing the moisture changes that behavior, at least for me with two cartridges. I was willing to sacrifice them. I often have to bake components to prevent them being dam,aged during reflow if their packaging has been open for more than a few hours, but I bake components at 75C or 95C, depending on the type of component.


I know this problem very well...here to solve we need to let it run (the md's) very often during the year ;)



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