ExOne (XONE - Get Report) reported earnings on Wednesday after the close. The company missed estimates on both the top and bottom lines, with revenue sinking 16% year over year. Guidance was also underwhelming compared to Street estimates, Cramer said.
Aside from that, Hewlett-Packard's (HPQ) presence in the 3-D printing space is expected sometime in June, according to CEO Meg Whitman, who was discussing the topic during Wednesday's annual shareholder meeting.
Cramer noted she critiqued the time and quality of current 3-D printing models and said the company believes it has solved both of those problems.
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That doesn't bode well for the 3-D printing industry, according to Cramer.
He added that many investors continue to ask about 3D Systems DDD, but he suggested that it was no longer a stock to be in. Shares are down 23% in the past month and off 34% year to date. It's a move that doesn't tend to rebound, Cramer said.
He concluded that shares of DDD have formed "one of the worst head-and-shoulders [patterns] I've ever seen," which a bearish technical chart pattern.