Abstract: A process of fabricating aerospace parts using selective laser sintering is provided, wherein the process generally comprises the steps of preparing a powder nylon material, loading the powder nylon material into a laser sintering machine, warming up the powder nylon material according to build warm-up parameters, building the part according to build parameters and part parameters, and cooling down the part according to build cool-down parameters. As a result, parts are produced that are directly used in aerospace structures, which meet the stringent performance requirements of aerospace applications, rather than as rapid prototypes as with conventional selective laser sintering processes. Additionally, specific designs for aerospace parts such as ducts, panels, and shrouds are provided that are produced by the selective laser sintering process.

Abstract: A planar/grinding apparatus comprising a housing, a cylindrical member and a motor is the present invention. The housing has a first planar working surface at a first elevation, a second planar working surface at a second elevation which is greater than the first elevation, and at least one aperture positioned in the first and second planar working surfaces. The cylindrical member projects through the aperture and has at least two abrasive surfaces thereon. The first abrasive surface extends from a third elevation, at least equal to or below the first elevation, to a fourth elevation, above the first elevation and below the second elevation. The second abrasive surface extends from a fifth elevation, at least equal to or below the second elevation and above the fourth elevation, to the sixth elevation, above the second elevation. While the motor rotates the cylindrical member.