A survey of 3D printer resellers indicated a challenging market in the third quarter that was "extremely discouraging" for market leaders' Stratasys ( SSYS ) and 3D Systems ( DDD ), according to a Piper Jaffray survey. Piper Jaffray analyst Troy Jensen collected feedback from 68 3D printer makers and service bureau operators, skewed toward Stratasys and 3D Systems. "The results were extremely discouraging for both Stratasys and 3D Systems," Jensen wrote in a research report. Both companies are likely to miss revenue estimates when they report Q3 earnings next month, he wrote. EPS is less at risk due to cost cutting by both companies, he said. IBD'S TAKE: Both 3D Systems and Stratasys are far off their highs from 2014, and have weak performance ratings, based on a variety of IBD metrics. IBD's Stock Spotlight currently lists 16 stocks with top fundamentals that could be getting ready to break out.