Turns crank to adjust builder motion on takeup rack to facilitate uniform winding of thread on reels. Operates machine for test run to verify adjustments and to obtain thread samples. Conducts standard tests on samples to determine breaking strength, elongation, and weight of thread, using tensile-testing machine, skein winder, and grain scales.
Posts results onto quality control reports.
Maintains record of samples and customer orders processed. Changes felt covers on rollers and wipers and replaces worn or broken guides and tapes, using handtools. Lubricates machines, using oilcan.