This homemade air compressor is easy to make and invaluable for your home workshop, includes step-by-step instructions, detailed diagram and materials list.
PORTABLE PRESSURE TANK: Here's a portable pressure tank, or air bottle, (See Image Gallery) that you'll find handy whenever you need to carry pressurized air "out beyond the powerlines" somewhere. Just get a short length of air hose with a 1 1/4 inch female flare fitting on one end and a tire chuck on the other and screw the female fitting onto a recycled Freon cylinder's top valve. Then buy an all-metal Schrader valve (the size of its "base" doesn't matter), drill a hole in the pressure tank to fit, and securely silver-solder the Schrader fitting into the opening. (NOTE: You must remove the hardware inside the valve before doing this soldering and then replace it alter the soldering is completed.)All right! You've just built yourself a pressure bottle. Add air through the Schrader valve (and check the pressure in the container with a tire gauge applied to this valve), carry the tank anywhere you like . . . and then use the air hose to "pump up" wagon tires or do other light jobs down in the back 40, on remote roads, etc. Simple isn't it?
Photo by the MOTHER EARTH NEWS staff
Diagram: MOTHER's homemade air compressor, build it from junk for less than $60.