My Whisperlite seems to be coming to a pressure just high enough to use, but no more. I keep having to pump it while cooking or it will go out, but it'll still have pressure in the morning. Actually, considering how little the volume changes during use, there's probably something else wrong. I need a new pump, probably. Instead of getting a new pump, I decided to go for something that actually is extremely light, but still runs on a liquid fuel. And it can be made for under $10, a bit more if a few things aren't already had. I tossed together an alcohol stove from cat food cans, bike spokes, and a lasagna pan. The stove itself is described here , although there are quite a few other places, and I took clues from there. I had to get a small cat food can, because my cat doesn't get overpriced food in tiny cans. I punched a single row of holes out with a hole punch rather than the church key on this one. The larger can has holes punched around in a double row and a small...