It's a simple scientific fact that starch enzymes double their rate of action for every 10 C rise above room temperature, up to a point where it starts degrading at about 50 C. So by raising the temperature by 20 C you quadruple the rate of curing. What would take 3 weeks at room temperature takes only about 5 days with a heating pad. While some people may not have electricity yet, since I do I might as well use it to get a timely rate of curing. Others? Who cares what they do? Frankly I shouldn't even have posted about this. Fortunately, people are so stupid it doesn't even matter.