The oven is a former food dehydrator, the video tapes are not stacked,
but sitting in the half of the shell with little to no sides.
There is a blower in the back to keep the air moving, a portion of which
is exhausted through the front. 3 or 4 trays with 3 to 4 tapes per tray.
Because of the forced air circulation, the exhausted air and the
separation, and the temperature control, I believe the tapes have very
little influence on each other.
Two 10 lb roasts in separate pans in a convection oven do not require as
much time as one 20 roast .
I have also baked a couple of tapes with the same procedure and found
little difference. Electricity costs become a factor.
I disabled thee thermal control of the oven and use a light dimmer and
thermometer on a multimeter. The built-in temperature control had way
too much swing in the hysteresis.
On 9/2/2017 10:08 PM, Jeff Willens wrote:
> 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.
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