Knot Hole Dent or hole in a piece of wood where a knot comes out. Knurl Done to roughen a surface or to increase a diameter, straight lines or diagonal cross-hatch indentations are made in a metal surface, which forces the areas between the indentations outward in a radial manner from the axis of the knurled part, which enlarges the surface area. Knurling Tool Apparatus made of two hardened steel wheels, each with an opposite direction diagonally-embossed surface, held together in a fixture. Used for the creation of a rough finish on he surface of tools handles, which creates a better grip or to creates depressions in pistons, increasing the diameter of the piston. Kraft Paper Heavy, moisture resistant, brownish building paper, reinforced with bonded fibers for structural strength, which has a variety of uses.
Wider paper is used under the finish exterior siding, either stucco or framing.
The narrower rolls are often called paper flashing and used around the rough openings of doors and windows, overlapped from the top on down to shed moisture. Alternate use is in the installation of plastic laminate. For this use, contact cement is used to coat the base with the kraft paper laid on top of it. The kraft paper is slipped out once the contact cement is dry, leaving the base and the laminate to make contact and bond together. Us Copyright 2001 Informedia Group, Inc.