Haven't tried this yet, but looks good. You can find the orginially explanation at
The Parsimonious Princess
To make your emergency heater, you'll need:
- A new, quart-sized paint can with a lid. These can be purchased at paint
stores and home improvement stores like Home Depot for around $2-3.
- A roll of unscented toilet paper (I say,
the cheaper the better. I bought a package of the rough, store brand stuff for
around a dollar. It wasn't hard to fit into the can -- others at the class had a
difficult time because they were using their nice, multiple-ply stuff.)
- A bottle of unscented, 70% isopropyl alcohol
- A box of matches (I just learned that you
can
waterproof matches by dipping the heads in wax. Pretty cool.)
- A quarter and some tape (I suggest
packaging tape)
Making the heater couldn't be easier. Simply
remove the cardboard tube from the center of the toilet paper (that's the
hardest part) - don't unroll the toilet paper; just bend the cardboard tube, and
pull out. Stuff the tube-free roll of toilet paper into the can. Fill with 2
cups of isopropyl alcohol, leaving 1/2 inch headspace (you want it to have room
to expand and contract with temperature fluctuations). This may take a little
time since you have to wait for the toilet paper to absorb the alcohol. The
toilet paper and alcohol should be below the rim of the can. Seal tightly with
lid. Tape the box of matches and the quarter to the side of the can. That's
it. If you prefer, you can store all the components of the heater in a plastic
bag and assemble the heater when you need it. Personally, I like having it ready
to go.
When you want to use the heater, pop open the lid, using the
quarter as leverage. Place the lit match or lighter carefully against the
alcohol-soaked toilet paper. A small flame will develop. The flame only uses
the alcohol as fuel -- the toilet paper shouldn't burn. If it does start to
burn, that means you need more alcohol. To do this, replace the lid to
extinguish the flame. Once out, add some more alcohol and light again. Once
you've used this heater, the only thing that ever needs replacing is the alcohol
since the TP doesn't burn. Assembling the heater is a one-time thing,
really.
Important: if you're going to use this heater in a car,
crack open the windows for ventilation. Even though the alcohol doesn't
produce carbon monoxide, you still want fresh air in such an enclosed
space.
The teacher of the class said that she burned her heater (to test
it out) in her kitchen and it lasted for five hours. According
to
one site I checked, you can keep a car heated at 60-70 degrees for 24 hours
with 4 pints of alcohol. These heaters can get hot, so be careful how you
handle them and be sure to keep them away from anything that could catch
(obviously). Another site I read suggested sliding the passenger seat in the car
as far back as it can go and placing the heater on the floor.
You can
also use this heater in your home in the event of an emergency. Since the area
isn't as small as that of a car, the instructor of the class said that you
should be fine without cracking the windows (if you're in a small room, it
couldn't hurt to crack it a little). This small heater, of course, won't keep an
entire room at 60-70 degrees, but it will keep the chill off enough.
These heaters are great for 72-hour kits.For under five
bucks, you can create a heat source for you and your family in the event of an
emergency -- and five dollars is a small price to pay for a little extra peace
of mind.