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Thomas P. Scanlan (1896–1986), was the founder and publisher of the Chicago-based Surplus Record. Mr. Scanlan was a University of Notre Dame graduate. After World War I, he began Surplus Record, which grew into a national trade publication for the used-machinery business which listed used machine tools and capital equipment.
A grinding machine is a machine tool used for producing very fine finishes, making very light cuts, or high precision forms using an abrasive wheel as the cutting device. This wheel can be made up of various sizes and types of stones, diamonds or inorganic materials.
Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after World War II, the numerical control (NC) machine was developed. NC machines used a series of numbers punched on paper tape or punched cards to control their motion.
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Bandsaws dedicated to industrial metal-cutting use, such as for structural steel in fabrication shops and for bar stock in machine shops, are available in vertical and horizontal designs. Typical band speeds range from 40 ft/min (0.20 m/s) to 5,000 ft/min (25 m/s), although specialized bandsaws are built for friction cutting of hard metals and ...
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.
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