This question addresses a common issue for many techs…
What is the best way to evaluate the performance of a check ring?
To evaluate the performance of the check ring, it is recommended that you perform the dynamic check ring repeatability test. This test consists of producing and weighing a series of ten short shots. The variation of the weights is then determined and represented as a percentage.
Although a shot to shot variation above 3% is typically considered unacceptable, you should consider performing this test on some different processes which are functioning properly to determine a baseline of comparison for your machines and materials.