The article discusses CAD software and the productivity gains from integrated 2-D/3-D software packages. Scrounging for work at an industrial design convention in Pittsburgh, Brian Case scored a coup: a deal with Confederate Motor Co. to pump out computer-aided drawings for a new $45,000 bike, the Wraith. A good rapport with a representative from a little company called Think3 led him to plop down $4,500 for a year of its Thinkid program. Case mastered Thinkid in two weeks. As he worked, the changes to his precise three-dimensional models were reflected instantly in the engineering and two-dimensional CAD files, the working drawings for the motorcycle's assembly. Using Thinkid, Case changed the bike's backbone from an unwieldy 4-inch-wide aluminum tube to a seamless carbon fiber piece weighing 14 pounds. The first Wraith rolled out and Confederate was beyond satisfied with Case: The company credits him with 50% of the bike's creative design and signed his four-person firm, Foraxis Design, to a three-year contract. Sales of CAD software to midsize companies are growing 15%, while large-company sales are expanding at a piddling 5% a year, says Gearoid Smyth, global marketing director of PTC, a CAD maker formerly known as Parametric Technology. Every year another 5% of the 1.2 million 2-D CAD users in manufacturing migrate to 3-D. Privately held Think3 expects its revenue to increase 40% this year to $50 million. Middle-market manufacturers make up 80% of its 5,000 customers. CAD's bigger players have noticed the midmarket surge. Dassault's Catia line now comes in a slimmed-down version geared toward smaller customers for $12,000, compared with a typical Catia package price of $25,000. Autodesk's 3-D modeling product, Inventor CAD, can be had for $5,200 a chair, not much more than its mainstay 2-D product, AutoCAD. The entry-level version of PTC's Pro/Engineer Wildfire runs $5,000.