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2. Chuck (engineering) - Wikipedia

   en.wikipedia.org/wiki/Chuck_(engineering)

   A self-centering chuck, also known as a scroll chuck, [2] uses dogs (usually called jaws), interconnected via a scroll gear (scroll plate), to hold onto a tool or workpiece. . Because they most often have three jaws, the term three-jaw chuck without other qualification is understood by machinists to mean a self-centering three-jaw chu

3. Collet - Wikipedia

   en.wikipedia.org/wiki/Collet

   Collet. A W-type external-thread collet (red) being pulled into its spindle seat (green) with a drawbar (blue), clamping, rotating and then releasing a shaft. A collet / ˈkɒlɪt / is a segmented sleeve, band or collar. [1][2] One of the two radial surfaces of a collet is usually tapered (i.e a truncated cone) and the other is cylindrical.

4. Machine taper - Wikipedia

   en.wikipedia.org/wiki/Machine_taper

   A machine taper is a system for securing cutting tools or toolholders in the spindle of a machine tool or power tool. A male member of conical form (that is, with a taper) fits into the female socket, which has a matching taper of equal angle. Almost all machine tool spindles, and many power tool spindles, have a taper as their primary method ...

5. Jig (tool) - Wikipedia

   en.wikipedia.org/wiki/Jig_(tool)

   A jig used in making jewelry, a specific type of jig, is a plate or open frame for holding work and helping to shape jewelry components made out of wire or small sheets of metal. A jig in the jewelry making application is used to help establish a pattern for use in shaping the wire or sheets of metal. In the jewelry application, the shaping of ...

6. Thaddeus S. C. Lowe - Wikipedia

   en.wikipedia.org/wiki/Thaddeus_S._C._Lowe

   Mount Lowe Railway, Pasadena, CA. Thaddeus Sobieski Constantine Lowe (August 20, 1832 – January 16, 1913), also known as Professor T. S. C. Lowe, was an American Civil War aeronaut, scientist and inventor, mostly self-educated in the fields of chemistry, meteorology, and aeronautics, and the father of military aerial reconnaissance in the ...

7. Pocket-hole joinery - Wikipedia

   en.wikipedia.org/wiki/Pocket-hole_joinery

   Pocket hole jigs allow the user to drill a hole at an accurate angle to get a good joint. Using a pocket hole jig also makes for a cleaner and neater appearance as opposed to creating a pocket hole without the help of a jig.[2] A pocket hole jig is generally made of plastic and has a metal insert that the drill bit is inserted through to drill ...