On 5/30/15 1:13 PM, Richard L. Hess wrote:
> In thinking about my original post, I don't think I have ever had a 
> plastic reel warp in a food dehydrator. Very early on, as I was 
> learning this technique, I used our kitchen oven which I soon learned 
> was a poor choice (although no tapes were harmed in the process). That 
> was before the days of having a temperature logger and knowing what I 
> know now. I think it was that process that warped a plastic reel, 
> partially because of the radiant heat from the element, I suspect.
I note that all those who report no damage to plastic reels are 
maintaining good control of baking temperature.  My nominal baking 
temperature is 53 degrees C, and I am very careful to never exceed 55 
degrees C.

-- John Chester