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Boring is an unincorporated community and census-designated place (CDP) in Clackamas County, Oregon, United States.It is located along Oregon Route 212 in the foothills of the Cascade mountain range, approximately twelve miles (19 km) southeast of downtown Portland, [2] and fourteen miles (23 km) northeast of Oregon City.
Boring machines come in a large variety of sizes and styles. Boring operations on small workpieces can be carried out on a lathe while larger workpieces are machined on boring mills. Workpieces are commonly 1 to 4 metres (3 ft 3 in to 13 ft 1 in) in diameter, but can be as large as 20 m (66 ft).
Mills at Green Hole, Philmont NY: Mills at Green Hole - Mill complex Early 1700s Fully operational water-powered saw mill, cider press, blacksmith shop, & woodworking shop; North Carolina Mingus Mill. Dellingers Mill, Bakersville, seasonally operational, water powered, 1867; Emmett Isaacs Mill, Surry County; Gwynn Valley Mill, Brevard
Franklin D. Jones, in his textbook Machine Shop Training Course (5th ed), [4] noted: "In many cases, a jig borer is a 'jig eliminator.' In other words, such a machine may be used instead of a jig either when the quantity of work is not large enough to warrant making a jig or when there is insufficient time for jig making."
It specialized in vertical boring mills and was largely responsible for the development of the modern form of that class of machine tools. [2] The firm was founded in 1894 by Edward Payson Bullard Sr. (born April 18, 1841, in Uxbridge, Massachusetts, US; died December 22, 1906, in Bridgeport, Connecticut, US [3]).
The ram type mills were produced for many years and in a wide range of sizes, from the home-shop-sized No. 6 up to the 9,000 pound No. 38. The company also produced heavy horizontal milling machines, as well as a small vertical milling machine for tool and die work. #12 with head in horizontal position #12 with head in vertical position