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2. Router (woodworking) - Wikipedia

   en.wikipedia.org/wiki/Router_(woodworking)

   Two typical router bits: (top) a 1 ⁄ 4-inch shaft Roman Ogee with bearing, (bottom) 1 ⁄ 4-inch shaft dovetail bit. Router bits come in a large variety of designs to create either decorative effects or joinery aids. Generally, they are classified as either high-speed steel (HSS) or carbide-tipped, however some recent innovations such as ...

3. Groove (joinery) - Wikipedia

   en.wikipedia.org/wiki/Groove_(joinery)

   A through groove (left) and a stopped groove. In joinery, a groove is a slot or trench cut into a member which runs parallel to the grain. A groove is thus differentiated from a dado, which runs across the grain. [1] Grooves are used for a range of purposes in cabinet making and other woodworking fields.

4. CNC router - Wikipedia

   en.wikipedia.org/wiki/CNC_router

   On some controllers the G-code can be loaded as a vector file on the router control panel. A vector file can be created from a picture file by using a drawing (CAD) software. The human operator selects the machine tool (such as a 1 ⁄ 4-inch (6-MM) v-bit or a 3 ⁄ 4-inch core box bit), speed, cut depth and tool path. For cut path, most ...

5. V-block - Wikipedia

   en.wikipedia.org/wiki/V-block

   V-Blocks are precision metalworking jigs typically used to hold round metal rods or pipes for performing drilling or milling operations. They consist of a rectangular steel or cast iron block with a 120 degree channel rotated 45-degrees from the sides, forming a V-shaped channel in the top. A small groove is cut in the bottom of the "V".

6. Speeds and feeds - Wikipedia

   en.wikipedia.org/wiki/Speeds_and_feeds

   Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.

7. Welding joint - Wikipedia

   en.wikipedia.org/wiki/Welding_joint

   A J-groove is formed either with special cutting machinery or by grinding the joint edge into the form of a J. Although a J-groove is more difficult and costly to prepare than a V-groove, a single J-groove on metal between a half an inch and three-quarters of an inch thick provides a stronger weld that requires less filler material.