Thank you all! This was a new one for me, but clearly not a new one in the business.

I do worry about storing them B-wound long term for tapes for which we are not the custodians, precisely because of Adrian's point. But leaving them B-wound for a few pre-transfer days may be a good option.

Thanks again,


Marcos Sueiro Bal
Senior Archivist, New York Public Radio
646 829 4063

-----Original Message-----
From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Dennis Rooney
Sent: Tuesday, February 07, 2017 10:32 AM
To: [log in to unmask]
Subject: Re: [ARSCLIST] B-wind for better pack

Dear Marcos,

I have employed "B" winds for improved tape pack for more than twenty-five years. Its benefits are noted especially with analog tapes. The process seems to re-stress the plastic to counter the effects of poor packs due to fast winds before storage, as well as warped packs. Usually, it is important to identify the problem early and use a B when storing the tape for later use. The more time the better, but improvement has been achieved after as little as sixty days. Furthermore, I have found that if the tape is returned to storage with a B wind, there is no need to change the reversal as long as the container is correctly marked.


On Tue, Feb 7, 2017 at 9:56 AM, Marcos Sueiro Bal <[log in to unmask]> wrote:

> A few weeks back, my colleague Ana Marie showed me a "trick" whereby 
> she gives a half twist to tapes suffering from poor pack while 
> library-winding them. The resulting reel of tape, B-wound (oxide on 
> the outside), often shows a much better-looking pack --so much so that 
> this has now become standard practice for me. However, the benefit 
> does not always remain (or at least not as strongly) after twisting 
> the tape back into an A-wind for storage.
> I was wondering if anyone else uses this "trick" and --more 
> importantly-- what makes it work, and why the tape often reverts back to a poorer pack.
> Also, does anyone store tape B-wound?
> Thank you,
> Marcos
> Marcos Sueiro Bal
> Senior Archivist, New York Public Radio
> 646 829 4063

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