Proto Labs predicted growth in 2017 and fourth-quarter profits handily beat analysts' expectations, boosting the stock 12 percent on Thursday.
Aided by a rise in 3-D printing orders and the end of unprofitable contracts that were part of the larger Alphaform acquisition, the Maple Plain-based maker of prototypes and quick-turn components reported adjusted earnings of $10.8 million or 41 cents a share.
Analysts had seen 39 cents per share.
Proto Labs sales for the quarter dropped 2 percent to $72.4 million.
Company officials noted that the quarter was challenged by the high U.S. dollar, unrealized foreign currency gains and one-time costs associated with exiting North Carolina facility leases in favor of company-owned facilities.
"Our fourth quarter financial results continued to reflect the challenges that we faced throughout 2016 with general economic conditions affecting the research-and-development spending in certain industries, a trend that was felt with greater impact as we closed out the year," said CEO Vicki Holt.
Revenue growth from its computer machining business and its relatively new entrance into 3-D printing helped brace other areas of the company.
Proto Labs traditionally has used high-tech lathes, milling and injection-molding machines to quickly make prototypes and parts for industrial customers.