Before allowing a student machinist to compete in the job market, machinist tests are used to verify the student’s knowledge. Shop math and print reading, as well as measurement tools, are commonly covered in machinist tests. During this phase of the examinations, the student’s ability to take precise measurement readings is also tested, as are basic machine shop practices. The exam is usually a timed test in which the student marks the answers to a set of questions on a computer. The machinist tests assess a student’s ability to recognize proper machining practices and tool identification, as well as their knowledge of basic metallurgy.
After a prospective machinist has completed all of the required training, he or she must pass a battery of machinist tests before receiving any type of machinist certification. Much of the testing for machinists is focused on measuring tools and how to use and read them properly. The machinist must be able to use line rulers, micrometers, and calipers of all types and styles accurately in order to perform the correct machining procedures on a given piece of steel. Shop math is also part of the various machinist tests, and it’s important for planning many machining steps.
The ability of the student to correctly identify the proper machining practices of any given machine shop task is one of the most important of all the machinist tests. The student will be tested on the proper steps and procedures taken during each and every step of the machining process, from the initial preparation of the piece to the finished product. Blueprint comprehension, stock selection, and machine setup are among the steps that have been put to the test. Tool selection and troubleshooting measures for suspected problems are also put to the test. The student is given a scenario to read, comprehend, and solve in order to complete the machine work that has been started on a specific part.
Machinist tests also include metallurgy knowledge and understanding. One of several tests will be used to help the student identify a piece of metal. The spark test is one of the most accurate ways to identify a piece of metal in most cases. The student will create sparks by placing a sample piece of metal against a spinning grinding stone. The color, shape, and intensity of the sparks are then identified and compared to a chart of known steel spark tendencies. The student will be certified as a machinist after passing all of the machinist tests.