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7 Feb 2001: 6.Drag link. At the end of 1977 Welbourn had given a paper in Zurich at an European Economic Commission seminar, and this was published in 1978 in an East German

7 Feb 2001: Finally, the question of the desirable features of a CAD/CAM system are discussed both from an economic and from a technical point of view; examples are shown of how far

7 Feb 2001: It maintained its dominant position until 1914, and typically men such as Willis and Parsons in engineering, Bertrand Russell in philosophy, Keynes in economics and Telfer in patristics had started their

7 Sep 2001: Simple Questions. Why is it economic to recycle aluminium cans but less so for steel ones? ... Why will new reserves of minerals/oil which are not now economic to mine become economic in the future?

8 Sep 2001: However, the production rate is slow so it is only economic for one-off jobs, repair work and difficult access situations. ... Joining of sheet (e.g. car body panels) is usually more economic by other welding processes such as spot welding.

8 Sep 2001: Economics. The production speed is limited by opening and closing the mould, so automation is normally used.

8 Sep 2001: cured). Economics. There are few composite forming processes, and the decision of which to use is normally determined first by shape and type of fibre (chopped or continuous), and then by

8 Sep 2001: Economics. Cycle time is limited by heat transfer, or curing time and is usually over 1 minute. ... The low production rate means that it is only usually economic for batch sizes in the tens of thousands.

8 Sep 2001: Economics. The machinery is expensive, and can cost well over £100,000. ... Because of the high capital cost, the process is only economic for batches of 100,000+.

8 Sep 2001: Economics. It is normal to try to reduce the amount of drilling required in a component by careful design - but when an accurate hole is required, drilling has little competition.