Sometimes you need a tool to operate a tool, and this project fits to this case. And sometimes you need just the right tool, no bigger no smaller. And this is the case.
I made this small air compressor to operate my pneumatic solder paste dispenser unit. The smallest sir compressors in the market were 25 liters. The dispenser can operate just fine with 5 liters or less because it draws a very small volume of air each time. Plus, i will not run a PCB production so i need this for say 10-20 parts each time. Filling a 25 liter tank is costy and noisy.
This air compressor utilizes the compressor of an old refrigerator that i was going to throw away. The motor is dead silent. Compared to the noise of a 25 liter air compressor this one is totally silent. Plus, you pay only what you use. The small tank is enough to run 200 cycles in one fill and its only a few liters.