|Machining of Material/Metal - Course: Machining of Metal. Methodical Course-Guide for Instructors|
Use visual aids to reinforce the trainees' understanding of your instruction. Visual aids, or other illustrative material, can be bolts, screws, nuts, locking devices, threaded joints or component parts or assemblies of machines with threaded joints. Instructors are advised to use the sample joints made by the trainees during their practical exercises and illustrate good and bad joints.