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There are three variants: the flattening , [1] sometimes called the first flattening, [2] as well as two other "flattenings" ′ and , each sometimes called the second flattening, [3] sometimes only given a symbol, [4] or sometimes called the second flattening and third flattening, respectively.
The term is based on the word "whet", which means to sharpen a blade, [3] [4] not on the word "wet". The verb nowadays to describe the process of using a sharpening stone for a knife is simply to sharpen, but the older term to whet is still sometimes used, though so rare in this sense that it is no longer mentioned in, for example, the Oxford Living Dictionaries.
A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. [1] The surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat with tolerances below 11.5 μm or 0.0115 mm per ...
A water table is a projection of lower masonry on the outside of a wall, slightly above the ground, or at the top of a wainscot section of a wall (in this case also known as a sill). It is both a functional and architectural feature that consists of a projection that deflects water running down the face of a building away from lower courses or ...
Most tables are composed of a flat surface and one or more supports (legs). A table with a single, central foot is a pedestal table. Long tables often have extra legs for support. Dinner table and chairs. Table tops can be in virtually any shape, although rectangular, square, round (e.g. the round table), and oval tops are the
These tables are referred to as the infeed and outfeed, the table from which the work piece is fed into the machine and the height reference table on which the work piece is floated over lightly as leaves the machine's cutting head. The cutting blades are adjusted to match the height and pitch of (& made square to) the outfeed table.
An unassembled IKEA flat-pack stool. Ready-to-assemble furniture (RTA), also known as knock-down furniture (KD), flat-pack furniture, or kit furniture, is a form of furniture that requires customer assembly. The separate components are packed for sale in cartons which also contain assembly instructions and sometimes hardware.
They are often used in flat pack furniture, which is typified by items such as book cases and wall units that come in a package of pre-cut and pre-drilled components ready to assemble by a novice. Knock-down fasteners can generally be assembled with a single driver , such as a hex key , which may be included in a hardware kit that comes with ...