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My experience was with two-inch quad video tapes, similar, but not the
same. 49C for 24 hours usually did the trick. Sometimes some slight
adhesion between layers (you could hear some popping from the wind), but
they all played just fine, even a handful of tapes with an actual
manufacturing defect that shed like mad.

Steve

Steve Greene
Audiovisual Archivist
Nixon Presidential Library and Museum
National Archives and Records Administration
(301) 837-1772

On Fri, Dec 9, 2016 at 6:03 PM, Gary A. Galo <[log in to unmask]> wrote:

> Corey's last point is important. I always leave the convection oven door
> closed overnight, allowing the tape to come back down to room temperature
> gradually. All of my Ampex 456 is 1/4-inch, so I consider myself lucky.
> I've never had to bake a tape for more than 8 hours.
>
> Gary
>
> ____________________________
>
> Gary Galo
> Audio Engineer Emeritus
> The Crane School of Music
> SUNY at Potsdam, NY 13676
>
> "Great art presupposes the alert mind of the educated listener."
> Arnold Schoenberg
>
> "A true artist doesn't want to be admired, he wants to be believed."
> Igor Markevitch
>
>
> -----Original Message-----
> From: Association for Recorded Sound Discussion List [mailto:
> [log in to unmask]] On Behalf Of Corey Bailey
> Sent: Friday, December 09, 2016 5:55 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] 2" Tape baking
>
> Hi Stewart,
>
> Toby Seay suggests 55 degrees Celsius which is 131 degrees F. That
> temperature will work fine but I would err on the the cautious side and go
> for 120-125 degrees F. (49-51.5 degrees Celsius). The 18 to 24 hour time
> frame suggested should be adequate as well if the 2" tape reaches
> temperature throughout for, at least, half of the time spent at
> temperature. 18, hours at with the entire tape at temperature would be even
> better. I'm, no doubt, preaching to the choir here but be sure that the
> tapes are carefully inspected and rewound at room temperature before
> attempting playback.
>
> Cheers!
>
> Corey
> Corey Bailey Audio Engineering
> www.baileyzone.net
>
>
>
> On 12/8/2016 2:05 PM, Toby Seay wrote:
> > 55 degrees Celsius for 18 to 24 hours should do it.
> >
> > Toby Seay
> >
> > On Thu, Dec 8, 2016 at 4:42 PM Stewart
> > Adam<[log in to unmask]>
> > wrote:
> >
> >
> >> Hello,
> >>
> >>
> >>
> >> I have a few 2-inch Grand Master reels that need baking.  What would
> >> be the ideal amount of
> >>
> >> time/temperature needed to bake them?
> >>
> >>
> >>
> >> Thank you
> >>
> >>
> >>
> >> Stewart Adam
> >>
> >> Creative Audio Works.
> >>
> >>
> >>
> >
>