Metallic container for boiling and cooking

I just checked. Unfortunately, warnings state that they can't be used over an open flame. My bad.

Hot rocks are okay.

I might buy a cheap muffin pan to experiment with, over a fire. Maybe it can't stand blue-flame stovetops, but it might do okay over a small campfire.

Edit:
Nope, no hope. Silicone bakeware melts at 500 degrees Celsius. A candle flame is around 630 degrees celsius.
 
I recall my friends dad and scout leader had a neat little collapsable cup, it looked like a bunch of metal bands inside each other. It was small enough to store in an empty chewing tobacco tin. He was a machinist, and I saw a coin holder he made, so I think he may have made the cup as well.
I rememberd it when I saw some collapsable collanders recently, I wonder if it would be difficult to make one?



Thinking about it I think I know how it could be done. A slightly tapered vessel would be marked at 1 inch sections, then cut along the lines. Now due o the thickness of the material, the diameters would cause them to lock in place from friction when placedminside each other.
The correct ratio between material thickness and angle of the sides would have to be found, through trial and error or cliff stamp could use physics for us.
 
Liam: If you search google for "collapsible cup" you`ll get a few hits, mostly for pre-ww2 stuff, so i`m not sure if these cups are currently being made, but from what i can gather, it wouldn`t take too much work to make a cup like that. (That`s with the motto that nothing is impossible, it just takes a little longer time.)
 
have you thought of using a small stainless loaf pan that you can carry all of your needed items and also use pan to cook in,it will fit in a m-16 clip pouch,it can clip mto your belt and always be with you,it holds an awful lot of materials in a small package,the pans are 3.00 and the pouch is 10.00
 
aarya said:
Liam: If you search google for "collapsible cup" you`ll get a few hits, mostly for pre-ww2 stuff, so i`m not sure if these cups are currently being made, but from what i can gather, it wouldn`t take too much work to make a cup like that. (That`s with the motto that nothing is impossible, it just takes a little longer time.)
Click to expand...

Here's a nice one that's performed well for me.

Source:
http://www.aerostich.com/catalog/US/Collapsible-Cup-p-16466.html
 
Metal Nagalne sized bottle?

bottlesstore_guyotstainlessscaledstandard-LG.jpg


www.guyotdesigns.com
 
I suspect that a collapsable cup would not be ideal for boiling.The expansion of the metal would likely play hell with the friction seals between rings. I've used these at various times, in both plastic and metal varieties, and found they usually leaked a little bit just using them as drinking cups.

-- FLIX
 
FLIX said:
I suspect that a collapsable cup would not be ideal for boiling.The expansion of the metal would likely play hell with the friction seals between rings. I've used these at various times, in both plastic and metal varieties, and found they usually leaked a little bit just using them as drinking cups.

-- FLIX
Click to expand...

I was thinking the same thing. I would experiment with it at home first before staking my life on it. Of course, I don't carry anything into the woods unless it can pass the "how does it work at home" test first.

KR
 
syrinx,

The larger cup looks noce, and perhaps the "lid" could be used for boiling. Then again, even though it says it is the "larger" of the two, it is still only 5 oz. That is smaller than a small styrafoam coffee cup!

Perhaps the same idea could be used in a larger model, say about 4" in diameter. The cup would hold more liquid, the larger lid would boil more, and yet the whole affair would collapse to about an inch in height. Nice place to store a few PSK goodies too.

-- FLIX
 
Call me crazy, but I am going to try an experiment.

It is a known fact that a plastic bottle of water (or cup of water) will not burn while it has water inside, because the water keeps it from reaching cumbustion/melting temperature.

So, my thought is simple.
If I wrap a layer of aluminum foil around the base of a standard bottle of H20, with the cap off (of course) Can I boil water right in the plastic bottle??

If the plastic melting point is 212°F or lower, we have a problem.
If not, it may prove as a make-shift way to purify 12 or 16 ozs. of drinking water in less-than-ideal conditions.
 
Skunk: I believe it`s paper that doesn`t burn while it has water inside it, because some of the water goes into the edges of the paper, and as such stops the temperature of the paper going over 100 degrees celsius.
Plastic melts from open flame, even if it has water in it.. I think..
But, if you have a plastic bottle, and understanding people in the house, go right ahead. :cool:
But, take pics!:thumbup:
 
aarya said:
Skunk: I believe it`s paper that doesn`t burn while it has water inside it, because some of the water goes into the edges of the paper, and as such stops the temperature of the paper going over 100 degrees celsius.
Plastic melts from open flame, even if it has water in it.. I think..
But, if you have a plastic bottle, and understanding people in the house, go right ahead. :cool:
But, take pics!:thumbup:
Click to expand...

The melting part, and open flame, thats whay I said wrap some aluminum foil around the bottom. It still fits with a survival situation, in that, it's easy to carry a folded flattened piece of foil.

I'll do it first, then repeat with a couple of pics.

Maybe this weekend, ... I have a campfire pit out back. ;)
 
Actually, after doing some googling on types of plastics, i`ve come up with this:
Polyethylene terephtalate (PET) plastic, has a melting point of 260°C or 500°F. So, theoretically, it should be possible to boil water in a plastic bottle. The problem might come, in the type of heat you want to apply to it.
Maybe an open flame reaches higher temps? Does the aluminum foil diffuse the heat sufficiently enough to not melt the plastic? If so, you wouldn`t have to worry about having small holes in your aluminum foil, since it isn`t directly containing the water.
Ofcourse, there is also the whole deal with plastic when it reaches certain temperatures, that it might let chemicals or compounds leech into the water.

Just thinking here.
 
Many of these suggestions should work adequately enough, but when you start talking about boiling water in paper cups, or putting hot stones into a foil "cup", you are in dire straights. Yes, they will work, but you should of had an actual container in the first place; if it takes up room, get a (slightly) bigger PSK. It's one of those things, like a knife, that you can do without but will hinder your survival if you don't have it. I'll go with Codger and a few others on this one: never needed more than a good ol' Sierra Cup.
My father, who was also my ScoutMaster, ingrained it into my frontal lobe, that a Sierra Cup was to be hooked onto my belt and was just as important as the things I had in my pockets(SAK, compass, matches,bandana, etc.)
 
aarya said:
Actually, after doing some googling on types of plastics, I've come up with this:
Polyethylene terephtalate (PET) plastic . . .
Of course, there is also the whole deal with plastic when it reaches certain temperatures, that it might let chemicals or compounds leach into the water.
Click to expand...

I seem to recall that "phthalates"--which sounds like PET likely contains, the way you break down the abbreviation--are one of the very questionable compounds they warn about getting if you cook food in certain kinds of plastic.

Good creativity, though--keep it coming.
 
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