Doug Wetzel, managing director at contract manufacturer Protomatic, Dexter, Mich., is finding business to be slower than he wishes. Like many other U.S. job shops, the 45-year-old company is experiencing a slowdown caused by tumbling oil prices and worldwide political and economic uncertainty. The difference is Wetzel isn’t too worried. His advice to fellow manufacturers is to not let market uncertainty paralyze them from seeing a slowdown’s silver lining— namely, time to prepare for the inevitable upturn.