Machinist tests assess a student’s knowledge before entering the job market, covering shop math, print reading, measuring tools, and basic workshop practices. Mechanic certification requires successful completion of various tests, including identifying proper machining practices, using measuring tools with precision, and understanding metallurgy.
Machinist tests are used to verify a student machinist’s knowledge before allowing the student to compete in the job market. It is common for mechanic tests to cover shop math and print reading, as well as measuring tools. Tests on the student’s ability to take accurate measurement readings are also conducted, and basic workshop practices are also tested during this phase of the exams. The exam is usually a timed test, with the student using a computer to mark answers to a given question. The mechanic’s tests examine the student’s ability to identify proper machining practices and tool identification in addition to basic knowledge of metallurgy.
When a prospective mechanic has completed all of the required training, a battery of mechanic tests must be successfully completed before receiving any form of mechanic certification. Many of the mechanic’s tests revolve around measuring tools and methods of using and reading them properly. From line rulers to micrometers and calipers of all types and styles, the mechanic must be able to use the tools with precision to perform the correct machining procedures on a given piece of steel. Shop math is also factored into the mechanic’s various tests and is critical in the design of many machining steps.
Some of the most important mechanic tests measure a student’s ability to correctly identify the proper machining practices of any shop task. From initial part preparation to the finished product, the student will be tested on the proper steps and procedures followed during each step of the machining process. Among the steps tested are understanding the design, selecting stock and setting up the machine. Tool selection and troubleshooting measures for suspected issues are also tested. The student is given a scenario to read, understand and troubleshoot in order to properly finish the machine work started on a given part.
A knowledge and understanding of metallurgy is also part of the mechanic’s tests. The student will be asked to identify a piece of metal by one of several tests. Typically, the spark test is one of the most accurate means of identifying a piece of metal. This involves the student placing a sample of the metal against a sharpening stone to create sparks. The sparks are then identified by color, shape and intensity and compared to a graph of known steel spark trends. After successfully completing the machinist tests, the student will be certified as a machinist.
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