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2. Bolt cutter - Wikipedia

   en.wikipedia.org/wiki/Bolt_cutter

   A bolt cutter, sometimes called bolt cropper, is a tool used for cutting bolts, chains, padlocks, rebar and wire mesh. It typically has long handles and short blades, with compound hinges to maximize leverage and cutting force. A typical bolt cutter yields 20 kilonewtons (4,500 lb f) of cutting force for a 250 newtons (56 lb f) force on the ...

3. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   A tap is used to cut or form the female portion of the mating pair (e.g. a nut ). A die is used to cut or form the male portion of the mating pair (e.g. a bolt ). The process of cutting or forming threads using a tap is called tapping, whereas the process using a die is called threading . Both tools can be used to clean up a thread, which is ...

4. Square thread form - Wikipedia

   en.wikipedia.org/wiki/Square_thread_form

   The greatest disadvantage is the difficulty in machining such a thread. The single-point cutting tools or taps and dies used to cut the thread cannot have efficient rake and relief angles (because of the square form), which makes the cutting slow and difficult. Square threads also cannot carry as much load as a trapezoidal thread, because the ...

5. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   Drill bit. From top: Spade, brad point, masonry, and twist drills bits. Drill bit (upper left), mounted on a pistol-grip electric drill. A set of masonry drills. A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create ...

6. Cutting tool (machining) - Wikipedia

   en.wikipedia.org/wiki/Cutting_tool_(machining)

   Cutting tool (machining) In the context of machining, a cutting tool or cutter is typically a hardened metal tool that is used to cut, shape, and remove material from a workpiece by means of machining tools as well as abrasive tools by way of shear deformation. The majority of these tools are designed exclusively for metals.

7. Henry Maudslay - Wikipedia

   en.wikipedia.org/wiki/Henry_Maudslay

   Metal bolts passing through wood framing to a metal fastening on the other side were usually fastened in non-threaded ways (such as clinching or upsetting against a washer). Maudslay designed a tool holder into which the cutting tool would be clamped, and which would slide on accurately planed surfaces to allow the cutting tool to move in ...