buy-air-compressor.com

air compressorIf you use pneumatic woodworking tools in your wood shop, you need a quality air compressor to power those tools. Because most air compressors need little day-to-day maintenance, they are easy to overlook. However, there are some items you should keep your eye on to make sure your pneumatic woodworking tools have a proper supply of air.
 
The first, most obvious statement is to read and follow all of the operating and maintenance steps outlined in your air compressor`s operating manual. Your compressor`s warranty may be voided if you do not follow the steps that the manufacturer outlines. 
 
Most modern air compressors appropriate for all but the largest wood shops are piston-style, oil free air compressors, so you likely won`t need to maintain an oil level in your unit. However, you should consult your unit`s operating manual to be certain.
 
from: woodworking.about.com