Tom, what you describe is the theory. I have heard rumours that was not the case in Opelika. Cases were filled with reels when needed. I suspect that bulk packs were perhaps a bit more likely to be all the same batch. How wide were the jumbos in Opelika? Cheers, Richard On 12/17/2015 9:27 PM, Tom Fine wrote: > I thought the numbers on the box and on the stickers box indicated batch > numbers and dates of manufacture, indicating that all pancakes in the > box were from that batch and date. At least that's how I always > understood 3M and Ampex boxes. > > -- Tom Fine > > ----- Original Message ----- From: "Lou Judson" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Thursday, December 17, 2015 7:54 PM > Subject: Re: [ARSCLIST] Interesting sticky-shed data point > > > Tom, is it a documented fact that all (12) rolls (reels or pancakes) of > tape in a box would be from the same manufacturing/slurry batch? I never > looked, but it would not surprise me if there were different > manufacturing runs on the same delivery carton… > > <L> > Lou Judson > Intuitive Audio > 415-883-2689 > > On Dec 17, 2015, at 4:38 PM, Tom Fine <[log in to unmask]> wrote: > >> Hi Marie: >> >> This is very strange: >>> I have also had reels of Ampex 456 come out of the same box of 10 or >>> 20 and >>> purchased at the same time where 1/2 have SSS and the rest are fine! >>> >> >> I've never heard of that from anyone else. That would almost seem to >> defy all theories of what causes sticky-shed, because one would assume >> by a "box" of tapes you mean a real-deal Ampex case with a batch >> number on it. If that's so, it's really freaky that some tapes in the >> same batch (which I think means the same production run of the >> chemical slurry) would get sticky-shed and others wouldn't. >> >> I'm not doubting your testimony at all, just saying that is calls into >> question what is believed to be the cause of sticky-shed, in that I >> can't see how the binder chemistry could differ within a batch. > -- Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada 647 479 2800 http://www.richardhess.com/tape/contact.htm Quality tape transfers -- even from hard-to-play tapes.