Designers at Microsoft conducted testing that reinforced the assumption that the index finger-based trackball design would offer users greater comfort and more precise cursor control, enabling them to work more quickly and efficiently. This relatively small part, a stress-cracked landing gear door assembly, had effectively grounded a commercial cargo plane on a runway in Israel. CMW's patented D-port design cylinder head for high performance Porsche racing demonstrates one of their innovative trademarks. Ron Fehrman, currently the shop's president, was concerned about rapidly advancing standards for quality and efficiency. He took a major leap from handcrafting work to automated machining when he purchased his first CNC machining center, an Elox Ramtype EDM, the Cadkey 3D CAD system and a CAM system.
Polyurethane is basically 'industrial strength' rubber.
Polyurethanes combine the performance of rubber materials with the processing ease of plastics. Rubber is a thermoset elastomer which is more difficult to process and mold. Polyurethanes are cast in a liquid state, allowing for easier processing and for molding more complex shapes. For abrasion resistance, impact resistance, and durability you can't beat polyurethane elastomers. For applications that require protection from abrasive wear it is an ideal material, outlasting similar parts made from metals or plastics by as much as 20 to 1.