TRADE OF VEHICLE BODY REPAIR - eCollege

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Module 2– Unit 2 Hammering Techniques Unlike most other trades, where the hammer is used with a followthough action from a combination of wrist, elbow and shoulder, in the skilled hands of a body repair worker the planishing hammer swing is a rhythmic action involving finger and wrist movement, producing a ringing blow (figure 16). The hammer should not be held tensely, but during the complete cycle of movement it should be held loosely in the hand. This will achieve a higher degree of accuracy and at the same time help to reduce fatigue. This loose holding of the hammer applies equally to dolly blocks, as it permits them to bounce back naturally and to assume the correct position for striking the next blow. With practice the wrist becomes strengthened and consequently working in restricted places becomes easier where an even wrist action is impossible. The dolly should be allowed to lie naturally in the hand with the face to be used uppermost and as with the hammer, should be held firmly but not tightly. Tap lightly at the dolly to obtain the feel of metal-onmetal and check for control of force of blow, each blow will give a metallic ring which should be the same for each stroke of the hammer. When no metallic ring is heard the hammer is not hitting the metal in alignment with the dolly. Figure 16: Swing of the Planishing Hammer Vehicle Body Repairs - Phase 2 22
Module 2– Unit 2 Direct Hammering Figure 17: Hammer and Dolly in Use Direct hammering is in fact the process of planishing and the body repair worker uses it as a finishing process after the work has been pre-shaped and roughed out. It is the essential practice to master and develop as a result of continuous experience. Before using the hammer and dolly together, it will be necessary to clean the underside of the portion of the wing or panel on which you will be working. Body panels and wings are covered with a sound deadening material which must be removed before starting the work. If you fail to clean the surface of this material it will not only stick to your dolly but will to a large degree destroy its effectiveness. Figure 18: Direct Hammering Vehicle Body Repairs - Phase 2 23
Page 1 and 2: TRADE OF VEHICLE BODY REPAIR PHASE
Page 3 and 4: Table of Contents Metal Finishing..
Page 5 and 6: Table of Figures Figure 1: Grinding
Page 7 and 8: Module 2- Unit 2 Metal Finishing Le
Page 9 and 10: Module 2- Unit 2 Introduction Metal
Page 11 and 12: Module 2- Unit 2 Metal Finishing Sa
Page 13 and 14: Module 2- Unit 2 craftsman who, to
Page 15 and 16: Module 2- Unit 2 The same process i
Page 17 and 18: Module 2- Unit 2 pre-shaped panel t
Page 19 and 20: Module 2- Unit 2 Split-and-Weld Sys
Page 21 and 22: Module 2- Unit 2 A common feature i
Page 23 and 24: Module 2- Unit 2 Preparing the Pane
Page 25 and 26: Module 2- Unit 2 However, in most c
Page 27: Module 2- Unit 2 Where planishing h
Page 31 and 32: Module 2- Unit 2 Figure 21: Using a
Page 33 and 34: Module 2- Unit 2 This will reduce t
Page 35 and 36: Module 2- Unit 2 Filing Techniques
Page 37 and 38: Module 2- Unit 2 Grinding Technique
Page 39 and 40: Module 2- Unit 2 Self Assessment Qu
Page 41 and 42: Module 2- Unit 2 Answers to Questio
Page 43: FÁS Learning Innovation Unit Apt.

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