They will use the services of companies like Shapeways, iMaterialise, FutureFactories, Ponoko, Sculpteo and others
According to their report they recently published.
According to the latest information from Terry Wohlers, the additive manufacturing (AM) industry is experiencing “staggering growth in low-cost ‘personal’ 3D printers.” These printers sell for less than $3000, with many available in kit form or preassembled. One of the first, the RepRap open-source machine is based on fused deposition modeling (FDM) technology developed and commercialized by Stratasys in the early 1990s.
Professional-grade, industrial additive manufacturing systems, on the other hand, sell for more than $5,000. According to Wohlers report, sales of these systems grew by an estimated 5.4% (CAGR) to 6,494 units in 2011. In 2010, slaes are estimated to have been 6,164 systems sold for an impressive growth of 37.4%.
This market information can be found in Wohlers Report 2012, a 287-page global study focusing on the advances in additive manufacturing and 3D printing worldwide.