Originally Posted by Franziska
I was wondering if anyone considered building/re-engineering one along the same basic design.
I have been kicking around some design ideas in my head
for a 3000 (6000 minus the oven). Here are the "basic basics" I have come up with.
The "burners" (fuel canister) really are not complicate. It is a shallow metal can with some wicking material inside. Alcohol does not need pressure or much of any heat to vaporize (Pour some rubbing alcohol in a shallow dish. It will "evaporate" (turn to vapor) at room temperature within a few hours.)
Light that small dish on fire and it will burn at a reasonable rate. Obviously once the burner "can" get warm, it will vaporize the alcohol faster which is good, because alcohol does not have a lot of BTUs. The top with the smaller hole concentrate to flame.
For the fuel
canister, I would start with a quart paint
can. Much too tall. Cut about 2"-4" out of the center of the sides. Cut 1" long tabs in the sides all the way around. Flex the tabs in and press the top portion on ! It will not be liquid tight, but I am sure you could find some type of high temperature adhesive
that should make it liquid tight before the assembly.
From some reading about alcohol "backpacking" stoves, many things can be used for the wick. Cut rounds of fiberglass
cloth and stack them in the can before assembly. Ceramic cloth insulation
would be better.
This is easy so far, but I have not figured out how to do the hole in the lid so that the flame can be some what controlled and snuffed out.
The "box" is basically a 9x13 baking pan with very tall sides. Grates/pot holder are bent SS rod.
I think part of the problem with the Origo is that they last FOREVER ! Second issue is, with the cost of solar
cells, chargers and inverters dropping every year, electric cooking
(induction hot plate, microwave, etc) IS
a viable option.