At Warner Bros. Studios Archive Dept., they have an oven capable of 
holding 36 - 2" NAB reels. The oven itself will hold temperature within 
2 degrees, even when full.  I have seen that oven full of 2" tape many 
times and all baked successfully. It usually takes increased 
temperatures and longer baking times when baking that many tapes of that 
thickness. At the home studio, I use a dehydrator and monitor the 
temperature with a digital thermometer that has a probe long enough that 
I can check the temp at several depths.

Cheers!

Corey

Corey Bailey Audio engineering

www.baileyzone.net

On 9/7/2017 2:37 PM, lists wrote:
> The comments about the volume of reels being done having an effect on baking
> times is something I have not observed.  What sort of apparatus are you
> using?  We use laboratory grade incubators stable to within half a degree
> with grated shelving to allow air flow, interior racks to hold tapes
> separated by at least a few inches each and an air evacuation mechanism to
> void the moisture extracted from the tapes.  We have not detected any effect
> on needed baking times whether we have one 1/4" reel or twenty in an
> incubation unit.  In fact, we have one unit where we can process 50 3/4"
> tapes at a time without seeing any loss of effectiveness in the process.
>
>
> Peter Brothers
> SPECS BROS., LLC
> 973-777-5055
> [log in to unmask]
> Audio and video restoration and re-mastering since 1983
>
>
>
> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:[log in to unmask]] On Behalf Of Gary A. Galo
> Sent: Sunday, September 3, 2017 7:54 AM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] a question of semantics concerning sticky shed?
>
> Agreed, and you might try putting two hub spacers between each reel for
> better air circulation.
>
> Best,
> 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
>
> ________________________________
> From: Association for Recorded Sound Discussion List
> <[log in to unmask]> on behalf of Jeff Willens <[log in to unmask]>
> Sent: Saturday, September 2, 2017 10:08:39 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] a question of semantics concerning sticky shed?
>
> John,
>  From my own observations in baking audio tapes, I've found that the more
> tapes you bake at one time, the less effective the baking process is. It
> takes exponentially longer with more reels. 12 seems like a huge amount to
> be doing at once. Try your regular process, but cut the number of tapes in
> half and see if it works any better.
>
> Of course, I defer to the real experts here, so YMMV.