Our air end rebuild shop, Simple Air End Solutions, is a full service facility equipped to handle total in-house rebuilds of stationary rotary air ends and blowers. Standard rebuilds (those not requiring machining) are common, but this example shows an "extensive" rebuild recently completed in our shop. When we receive a unit, we take pictures and log on to our Work Sheet. Then, when disassembled, we take pictures again. This particular unit showed that the rotor had welde