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8 Sep 2001: Economics. Equipment is generally low cost, except where automation is used. ... Wave soldering is the most economic means of soldering large batches of printed circuit boards.

30 Jan 2002: Speed is critical is disassembly is to be economic. In general, the more different materials used in a product, the harder it will be to recycle them.

8 Sep 2001: Cold extrusion is possible for some metals giving better properties. Economics. ... Usually only economic for several thousand metres. Typical products. Tubing. aluminium window frames.

7 Sep 2001: it is the same whatever the size of the test-piece. Many applications require stiff materials, e.g.

30 Jan 2002: A series of tests are carried out with the specimens in a furnace.

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. The basic equipment cost is low - from £500 to £3,000; automation and higher temperature furnaces can increase this a lot. ... The labour intensive nature of the process mean it is usually only economic for small batches, although dedicated

20 Jan 2000: Every product is designed in a particular way - product analysis enables us to understand the important materials, processing, economic and aesthetic decisions which are required before any product can be manufactured. ... Choose a suitable process that

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: Near-net-shape process, only the ends of the extrusion are wasted. Economics. ... Because of the high costs, it is usually only economic to produce lengths over 10km - although there is little competition for many of the possible shapes.