One thing I should mention about making your own alcohol burner stoves - you need to spend a bunch of time and will most likely need to make several, improving your design until you are happy with it. The easiest one to make by far is the supercat and it is also easy to use - though you may need to set it up in a sheltered spot or use a wind screen. This thread has inspired me to play with some I have made and to create a new supercat to replace the one that got squashed.
To make a supercat stove:
1. Find a 3oz aluminium can - some cat food cans are aluminium and I have found some aluminium tuna cans too.
2. If tuna - eat contents. If cat food - feed contents to cat.
3. Rinse can.
4. Take single hole punch (mine looks like this:
http://www.google.com/imgres?imgurl...-3KDg&esq=1&page=1&ndsp=41&ved=1t:429,r:0,s:0 )
5. Make 2 rows of holes near the top of the can.
Well that's about it. If you can't boil 2 cups of water from 1 ounce of alcohol then you need to read up more on the design and try again. From lighting the stove to the water boiling it should take less than 10 minutes. From 1oz of fuel you should be able to watch the water boil for at least a couple of minutes before the fuel runs out.
I can open a can, eat the tuna, rinse the can & make it into a stove in less than 10 minutes total. Despite this I generally prefer my gas stove because I can boil water quicker, turn it up or down and turn if off when I've finished cooking and not waste the remaining fuel. But I have found it fun to build & test various alcohol stoves and they do work. At some point I'll try some bought stoves to see how much better they are than ones I've made - the white box & the Trangia ones and maybe one of Tinny's ones would all be worth playing with.
My testing has involved using a syringe to measure fuel, using a measuring jug to measure water and using a stopwatch to measure time. Apart from the data from those tests I also consider the ease of use and whether I need a separate pot stand or wind screen or priming pan. Then there is the ease of building the stove to consider.