Stratasys stock is 3D printing nothing but losses these days.Stratasys (SSYS -14.71%) stock fell 14.9% through 12:05 p.m. on mixed earnings on Thursday.Wall Street analysts had forecast the 3D printing company would lose $0.05 per share in the second quarter, and the good news is that Stratasys beat that estimate -- losing "only" $0.04. The bad news is that Stratasys fell well short of Street forecasts for $146.3 million in Q2 sales, reporting only $138 million. Stratasys' Q2 earningsThis news gets worse. T ...