a method for injection - molding workpieces in a mold of an injection - molding machine is disclosed . the method provides a means of conducting test cycles during the initial setup of the machine at reduced speed . in a multi - cavity mold all of the workpieces are demolded by means of a handling system having a workpiece carrier system receiving and holding all workpieces in a regular pattern . the workpieces are inspected on the workpiece carrier system for determining whether all of the cavities have been filled with plastic material and whether the workpieces are of a predetermined quality . if this is not the case , the necessary adjustments are made and the test cycle is repeated . if all of the workpieces are of a predetermined quality , the machine is switched to automatic production at high nominal speed .