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Alcohol Stove with leak free reservoir!

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Viewing 7 posts - 1 through 7 (of 7 total)
Russell Lawson BPL Member
PostedMar 31, 2015 at 7:08 pm

I've avoided alcohol stoves for a while now mainly because either my fuel bottle leaks or my pepsi can attempts don't boil 16oz of water with a half ounce of fuel. So I devised this prototype stove to pinch out the fuel bottle and precise measurements for just warming up oatmeal in the morning. It conveniently gets rid of the need for a pot stand too, although having a hardware cloth one sit on top would allow for more airflow and quicker boils.

This stove holds a little over 3ounces of fuel and can be put out by slapping the cap in the hole, just make sure you let it cool off before tightening the lid down, melting the gasket.

The whole stove weighs 1.3oz with the cap and boiled water in 11 minutes with a total burn time of 25min off one ounce of fuel.
1 very rough, took picture right after I took it off the grinder and ran home.23

In this picture you can see that I put a 3/4" aluminum tube in the bottom that I pinned in place. At the bottom I grooved out the usual alcohol seep holes. Just below the rim of the bottle I used whatever drill bit I had lying around to drill out to the brass thread insert.4

I'm seeking more aluminum bottles for further prototypes, my next plan is to make a 1 1/4" pot stand height and to drill the holes on the top of the aluminum pipe instead of into the bottle.
Feedback appreciated! I'm officially a stove addict, but in my defense I these everyday at work

Dan Yeruski BPL Member
PostedApr 1, 2015 at 7:11 am

Well done fellow stove addict :) I like the 4 point suspension, looks like a castle.

What is the purpose of the brass thread insert?

Russell Lawson BPL Member
PostedApr 1, 2015 at 9:49 am

haha, yeah I manage to put castle crowns on everything I can, I think it's a Scottish thing.
The brass insert is the threads to an aluminum water bottle flipped insideout. the original plastic plug still fits with a tight seal, i just had to shave off the rim to the cap.

To get the top of the waterbottle to be more flat and hold more fuel I took the cylinder I cut out of a dollar store spray bottle stove project and used it to hammer this project. If I find another bottle soon I will cut the bottom portion 4" high and the lid 2.5" from top, then flatten it to 1.5" then use the 3/4" aluminum tube to push the brass threads even higher as I put it together. doing this would also double up the metal for the pot stand so it is more durable.

Dan Yeruski BPL Member
PostedApr 1, 2015 at 10:30 am

Wow, that's totally clever….awesome idea the threaded insert with bottle cap to seal off any unused thread. WOW!!!! totally impressed. :-)

Russell Lawson BPL Member
PostedApr 3, 2015 at 1:27 pm

Awesome thanks zelph. coming from the stove godfathar that means something. hope you guys can utilize the idea, back to work

PostedApr 6, 2015 at 1:28 am

Well, in these days I wanted to build just the same thing: a resealable alcohol stove!

I bought from http://www.ebay.com/itm/-/251584041503 for 1$ (free shipping!) this nice aluminium tin (50ml version):

01

After 3 long weeks of waiting, it arrived! Here on the side a "narrow" 55mm coca-cola can for comparison

01a

Here filled with cotton (definitive version is using rock wool):

02

And here for the first time at work:

03

…With a 25mm stove-pot distance (this seem to be optimal distance), it will boil 500ml of water in 9:00 minutes.

After some testing, container is not seal-proof, but adding some food film under the top will improve the seal a lot. Also, filling it with only the alcohol rock wool can absorb, will solve every spilling problem…

Weight with top and rock-wool is 10 grams.

The alcohol it contains is enough for 2-person daily trip or a solo-overnight; but also when an extra fuel bottle is needed, I found it very practical as I don'ìt have to measure alcohol anymore: remained alcohol in't waster alcohol anymore! ;-)

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