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Instead, both the bore and the honing stones conform to the average shape of the honing stones' motion, which in the case of bore honing is a cylinder. This averaging effect occurs in all honing processes; both the workpiece and stones erode until they conform to the average shape of the stones' cutting surface. Since the honing stones tend to ...
Data from Austro Engine and type certificate General characteristics Type: Four-cylinder, four-stroke diesel aircraft engine Bore: 83 mm (3.3 in) Stroke: 92 mm (3.6 in) Displacement: 1,991 cm 3 (121 cu in) Length: 738 mm (29 in) Width: 855 mm (34 in) Height: 574 mm (23 in) Dry weight: 186 kg (410 lb) Mean time between failures: > 100,000 h Time between overhauls: 1,800 h Components Fuel type ...
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.
In a gasoline or diesel engine, the pistons ride up and down within the engine maintaining a tight seal via the piston rings. Over time, the constant rubbing of the rings against the cylinder wall can polish it to a very smooth finish. This creates problems in two ways.
There are many different kinds of honing oils to suit different needs. It is important to use the appropriate solution for the job. In the case of knife sharpening, motor oil is too thick or heavy and can over-lubricate or clog a sharpening stone, whereas WD-40 is too light an oil and will not carry the metal filings plus stone dust (collectively known as swarf) away from the stone, and clog it.
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The cylinder head is tipped upwards for illustrative purposes. An engine where all the cylinders share a common block is called a monobloc engine. Most modern engines use a monobloc design, and few have a separate block for each cylinder. This has led to the term "engine block," which usually implies a monobloc design, with "monobloc" rarely used.
Diamond wheel. Diamond wheels are grinding wheels with industrial diamonds bonded to the periphery. They are used for grinding extremely hard materials such as carbide cutting tips, gemstones or concrete. The saw pictured to the right is a slitting saw and is designed for slicing hard materials, typically gemstones.