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2. Router (woodworking) - Wikipedia

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

   The sole plate is then either rested flat on the workpiece overhanging the edge so that the cutting bit is not contacting the work (and then entering the work from the side once the motor is turned on), or the sole plate is placed at an angle with the bit above the work and the bit is "rocked" over into the work once the motor is turned on.

3. Router table (woodworking) - Wikipedia

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

   A router table is a stationary woodworking machine in which a vertically oriented spindle of a woodworking router protrudes from the machine table and can be spun at speeds typically between 3000 and 24,000 rpm. Cutter heads (router bits) may be mounted in the spindle chuck. As the workpiece is fed into the machine, the cutters mold a profile ...

4. Speeds and feeds - Wikipedia

   en.wikipedia.org/wiki/Speeds_and_feeds

   Drill bit in a drill; Milling cutter in a milling machine; Router bit in a wood router; Shaper cutter or knife in a wood shaper or spindle moulder; Grinding wheel on a grinding machine. Excessive spindle speed will cause premature tool wear, breakages, and can cause tool chatter, all of which can lead to potentially dangerous conditions.

5. Glossary of woodworking - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_woodworking

   On a table saw or router, cutting against the normal feed direction at the end of the cut to prevent tearout. close grain Any wood grain with very fine fibers of cells that are not visibly porous. compass saw conversion The reduction of a whole log into pieces suitable for working. Conversion can be done in three basic ways: sawn, hewn, or ...

6. CNC router - Wikipedia

   en.wikipedia.org/wiki/CNC_router

   A stone CNC router is a type of CNC router machine designed for marble, granite, artificial stone, tombstone, ceramic tiles, glass machining, polishing for arts and crafts, etc. Wood, metal and stone require different "bits" or "inserts". There is bit call as diamond tools with different diameter 4mm, 6mm, 8mm mainly used.

7. Methylene diphenyl diisocyanate - Wikipedia

   en.wikipedia.org/wiki/Methylene_diphenyl...

   Methylene diphenyl diisocyanate (MDI) is an aromatic diisocyanate. Three isomers are common, varying by the positions of the isocyanate groups around the rings: 2,2′-MDI, 2,4′-MDI, and 4,4′-MDI. The 4,4′ isomer is most widely used, and is also known as 4,4′-diphenylmethane diisocyanate. [3] This isomer is also known as Pure MDI.