[volt-nuts] Oven thermal insulation

[Charles Steinmetz]

Chuck wrote:

>Bear in mind that the common ordinary styrofoam
>cup does just fine when containing boiling water.

Sure, for the 4-5 minutes the water stays above 70C.  But over 5-10 
years 24/7/365....

I once broke my office coffee cup and temporarily used a styrofoam 
cup as a replacement.  I brewed tea in it once or twice a day, and in 
just a few weeks it had gone through significant dimensional changes 
(it was a little smaller and somewhat irregularly shaped).

Best regards,

Charles