operation A surfacing operation in which material is removed in one cut or several axial cuts of equal depth according to a pre-defined machining strategy Boundaries of the planar area to be machined are soft
Material hooped or placed on top of fabrics that have a definable nap or surface texture, such as corduroy and terry cloth, prior to embroidery The facing compacts the wale or nap and holds the stitches above it
A coating of a different material, masonry or brick, for architectural or protection purposes, e g stonework facing, brickwork facing (concrete dam) or an impervious coating on the upstream slope of a dam