| | Metalworking - Wikipedia, the free encyclopedia |
 | | For example, the ancient technique of granulation is found spontaneously around the world in numerous ancient cultures before the historic record shows people travelled seas or overland to far regions of the earth to share this process still being used, and attempted by metalsmiths today. |
 | | In a metalworking lathe, metal is removed from the workpiece using a hardened cutting tool which is usually fixed to a solid moveable mounting called the "toolpost", this arrangement is then moved around the workpiece using handwheels and/or computer controlled motors. |
 | | This is often done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint, but sometimes pressure is used in conjunction with heat, or by itself, to produce the weld. |
| en.wikipedia.org /wiki/Metal_working (1369 words) |