Heating the Wheat bag

Wheat bags hold significantly less heat than a similar sized hot water bottle
due to the average moisture content of only around 14%, however their shape and flexibility oftenmakes them
first choice for when a bit of comfort, or some stiff joints need a warm up.
But the difficulty of heating them in a car makes them less useful.

It was cold dark wet and windy as we headed out of town for a drive early saturday, but I had an ace up my sleeve to keep the wife happy, and she quickly made use of the heat bag I had pre-heated at home in the microwave.

This was fine - but these things don't last long and an hour into the trip we had a long stop and got back into the car cold and damp again.
A nice warm heat bag would have really been appreciated by someone a little sore from to much gardening.

Giving my best "husband has all the answers look" , I reached over to the back seat and pulled out a nice re-warmed heatbag.

These things are very hard to heat without a mircowave normally, but the solution I used was to place it in our little 12v electric oven before getting out of the car and in 15 minutes it was nice and cozy again.





Note 1 A heat bag has high insulation value and takes a long time to heat, turning it over to expose cold areas to warmth helps.

Note 2 Heat bags have caused many fires by spontaneous combustion, while this is very unlikely by heating in the above manner , heating in a caravan's mircowave and then leaving unattended in a bed is a big no-no.

Note 3 I used our high speed 12v oven as per thread 39429, which is about a 1/3 faster than your normally $29.95 Dick Smith item.Image Could Not Be Found