HotSmart Plates are designed to absorb the tremendous thermal shock of absorbing enough heat in one single minute to remain hot for 1/2 hour, however you need to know...
Aside from dropping any plate on the floor, the easiest way of destroying it is by sudden changes of temperature:
Putting a plate on the fire or pouring cold water on a hot plate. everybody knows that (well almost everybody).
HotSmart® Plates are InstaHot™ meaning they need one single minute preheating but because of their design using pre-Colombian technology, the Stefan-Boltzmann law and other tricks, they don't crack under normal use.
How do HotSmart® Plates get so hot in one single minute without cracking was maybe our main challenge but some people want it even hotter so a couple of tips:
1A) For most people (some report they don't even need the whole minute preheating), see below:
1B) Want it hotter? Preheat the empty plate for only 30 seconds and... Stop the microwave. wait about 10 seconds (count "Mississippis" or whatever) continue preheating but now 40- 45 seconds for a total preheating time of 1:15 or...
2) Use the "Piping Hot" method, click link: http://bit.ly/PipingHot
Direct link to buy Amazon.com: http://bit.ly/hotsmart
(Your parents will love a HotSmart it is an excellent, original present).