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Mechanic Machine Tool Maintenance Ebooks

Trade Practical

Trade Theory

Mechanic Machine Tool Maintenance Videos

Introduction to Engineering Drawing /Engineering Graphics for all Engineering Students

courtesy :Engineering Drawing

Engineering Drawing instruments part-1

courtesy :Engineering Drawing

Engineering Drawing instruments part-2

courtesy :Engineering Drawing

Types of lines in Engineering Drawing

courtesy :Skill Train

Autocad free license for students | AutoCAD 2020- Downloading, Installation and Activation

courtesy :Skill Train

Types of angles | Types of Triangles | Angles - Types and definition, Acute, Right and Obtuse Angles

courtesy :Skill Book

Dimensioning in Engineering Drawing ,Basic Rules of Dimensioning

courtesy :Skill Book

Types of punch in fitting shop

courtesy :Skill Book

Types of scribers, dividers and trammel in fitting shop

courtesy :Skill Book

caliper and types of caliper | jenny caliper

courtesy :Skill Book

unit system | Fundamental units | Derived units | workshop calculation and science for ITI Students

courtesy :Skill Book

system of unit | conversion of units | workshop calculation and science for ITI Students

courtesy :Skill Book

conversion of units | workshop calculation and science for ITI Students | Maths for ITI students

courtesy :Skill Book

Autocad class-1 | Basic Introduction and setting | Customize User Interface

courtesy :Skill Book

Conventional Representation of Materials | conventional representation in engineering drawing

courtesy :Skill Book

units and conversion of units |tricks important questions | workshop cal. and science for ITI Students

courtesy :Skill Book

`What is Fraction? | Introduction to Fractions | Workshop calculation and science for ITI students

courtesy :Skill Book

Videos

Employability Skills Eng cts

courtesy :Quest Alliance

Employability Skills CTS Hindi

courtesy :Quest Alliance

Introduction to Employability Skills Curriculum

courtesy :Quest Alliance

रोजगार कौशल पाठ्यचर्या का परिचय

courtesy :Quest Alliance

Employability Skills ,For ITI Students, Unit-1- Introduction & Importance of Employability Skills

courtesy :Skill Train

Employability Skills , For ITI Students, Unit-1, Chapter-1, Orientation of Employability Skills

courtesy :Skill Train

Employability Skills | Unit-1, Chapter-2, Learn together | for ITI Students

courtesy :Skill Train

LinkedIn पर अकाउंट कैसे बनाये? | How to Use Linkedin full guide

courtesy :Skill Book

How to Use Linkedin full guide in Hindi | Linkedin in Hindi | part-2

courtesy :Skill Book

Basic rules of English Communication-English Literacy chapter-1

courtesy :Skill Book

Microsoft excel Tutorial | Baisc of cell | Excel shortcuts | Types of cursor | Excel tips and tricks

courtesy :Skill Book

Classification of words | Word building -English Literacy chapter-2

courtesy :Skill Book

Microsoft Excel Tutorial for Beginners in Hindi

courtesy :Skill Book

Naming words | Employability skills | English Literacy- Chapter 3

courtesy :Skill Book

Know yourself | Employability skills | Unit-1, Chapter-3 | ITI Students

courtesy :Skill Book

Ethics and values | Employability Skills | Unit-1, Chapter-4, | for ITI Students

courtesy :Skill Book

Microsoft Excel Tutorial | Cell Basics | covert Row data into column data | Excel tips and tricks

courtesy :Skill Book

Singular and Plural | Employability skills | English Literacy- Chapter 4

courtesy :Skill Book

Basic Social Etiquette | Employability skills | Unit -1 chapter -5 | for ITI Students

courtesy :Skill Book

Microsoft Excel Tutorial | Cell formatting | Excel tips and tricks

courtesy :Skill Book

Pronouns | Employability skills | English Literacy- Chapter 5

courtesy :Skill Book

Role Modelling | Employability skills | Unit -1 chapter -6 | for ITI Students

courtesy :Skill Book

Excel Copy Paste Tricks | How To Use Cut, Copy And Paste Options In MS Excel 2019/2016/2013 in hindi

courtesy :Skill Book

Mechanic Machine Tool Maintenance Question Bank



Employability Skill 1st Semester



Employability Skill 2nd Semester



1st Year-Workshop Cal. and Science



1st Sem. Workshop Cal. and Science



2nd Sem. Workshop Cal. and Science



2nd Year-Workshop Cal. and Science



Coming Soon

Mechanic Machine Tool Maintenance

Courtesy :DET Haryana



S.No. Week No. / Chapter Topics Videos Link
1 1 Week / 1st Year Industrial Training Institute-scope https://youtu.be/aybLcnIdCSw
2 1 Week / 1st Year Soft skills https://youtu.be/2AQ3FGQhROM
3 1 Week / 1st Year Introduction of First aid https://youtu.be/X9AaTk8YlVM
4 1 Week / 1st Year Operation of electrical mains and electrical safety https://youtu.be/2nZ9lS6VHFU
5 1 Week / 1st Year Introduction of PPEs https://youtu.be/7emUloowPl0
6 1 Week / 1st Year Response to emergencies e.g.; power failure, fire https://youtu.be/oLm7AedPD30
7 1 Week / 1st Year Houskeeping and 5S https://youtu.be/OxQCO62V-Bk
8 1 Week / 1st Year Environment Safety https://youtu.be/T9lbCcSaHAQ
9 1 Week / 1st Year Occuptional Safety https://youtu.be/BxYZ59S0qsg
10 1 Week / 1st Year Basic understanding on Hot work, confined space work https://youtu.be/dO9bD3XUOhY
11 2 Week / 1st Year Linear Measurement https://youtu.be/bGkDbACrcLA
12 2 Week / 1st Year Steel rule dividers https://youtu.be/DnpLXes9HW8
13 2 Week / 1st Year Callipers – types and uses https://youtu.be/GIiHdE0Ytco
14 2 Week / 1st Year Punch – types and uses. https://youtu.be/LZqRJmO0aOk
15 2 Week / 1st Year hammers-types https://youtu.be/Vm63D-BH_Ng
16 3 Week / 1st Year Bench vice construction, types, uses, care & maintenance https://youtu.be/KgaQVyXfaUE
17 3 Week / 1st Year Hacksaw frames and blades, specification, description https://youtu.be/yyK_pnDVhqY
18 3 Week / 1st Year Files- specifications, description, materials, grades, cuts, file https://youtu.be/-1ov1jn7m-w
19 3 Week / 1st Year Types of files, care and maintenance of files https://youtu.be/NltlUONoUos
20 3 Week / 1st Year Measuring standards https://youtu.be/tVR9H34ovag
21 3 Week / 1st Year Angular measurements. https://youtu.be/dgkLbX4cqr4
22 3 Week / 1st Year Vice clamps https://youtu.be/5pCgpTq2IYE
23 4 Week / 1st Year Marking of and layout tools https://youtu.be/lwOfk4_GR30
24 4 Week / 1st Year Scribing block https://youtu.be/FI8Gde9L7vo
25 4 Week / 1st Year odd leg calipers https://youtu.be/j_YXjfsrZAc
26 4 Week / 1st Year Types of hammer  https://youtu.be/nEtmSpSgaBM
27 4 Week / 1st Year Punches- description, classification, material, care https://youtu.be/LZqRJmO0aOk
28 4 Week / 1st Year Try square https://youtu.be/aPkv9OLp9EQ
29 4 Week / 1st Year ordinary depth gauge https://youtu.be/rNi7moCtJ8o
30 4 Week / 1st Year protractor- description, uses https://youtu.be/50qt5k1IqwI
31 4 Week / 1st Year Calipers- types, material, constructional details, uses https://youtu.be/GIiHdE0Ytco
32 4 Week / 1st Year cold chisels- materials, types, cutting angles https://youtu.be/te2PzGGi_Kg
33 5 Week / 1st Year Marking media https://youtu.be/UmEgT-JanVI
34 5 Week / 1st Year Surface plate https://youtu.be/QGYTeFSKNl0
35 5 Week / 1st Year ‘V’ block https://youtu.be/6TxxPpUBeQU
36 5 Week / 1st Year Angle plates https://youtu.be/MCnNnueEH7k
37 5 Week / 1st Year Parallel block, description https://youtu.be/8V7BolFL9ms
38 6_7 Week / 1st Year Drill types  https://youtu.be/LjV9tT7LCv4
39 6_7 Week / 1st Year Tap ,Die-types & application https://youtu.be/0QmA9ueFaAQ
40 6_7 Week / 1st Year Reamer- material, types https://youtu.be/_oGv8Fd8EyQ
41 8 Week / 1st Year Micrometer- outside – principle, constructional features https://youtu.be/8IIdfqIXO2Q
42 8 Week / 1st Year Micrometer- inside – principle, constructional features https://youtu.be/8IIdfqIXO2Q
43 8 Week / 1st Year Micrometer depth gauge https://youtu.be/px9R1IOJKzY
44 8 Week / 1st Year Digital micrometer https://youtu.be/8IIdfqIXO2Q
45 9 Week / 1st Year Vernier calipers, principle, construction, graduations https://youtu.be/SX0K9MiwolM
46 9 Week / 1st Year Vernier bevel protractor, construction, https://youtu.be/UE9e7r1T9AA
47 9 Week / 1st Year dial Vernier Caliper https://youtu.be/1qZ39x-MSwE
48 9 Week / 1st Year Digital vernier Caliper https://youtu.be/vXo1zyUqXEg
49 10_11 Week / 1st Year Pedestal grinder – Introduction, care & use https://youtu.be/QMEiPdtES58
50 10_11 Week / 1st Year Mounting Of wheel https://youtu.be/5f8jZzQCTPM
51 10_11 Week / 1st Year hazards, risk https://youtu.be/pf_5IM28-6s
52 12 Week / 1st Year Drilling machines https://youtu.be/DvfmRV84Jus
53 12 Week / 1st Year Pillar Drilling machines https://youtu.be/-0ty2ddLnWo
54 12 Week / 1st Year Radial drilling machine. https://youtu.be/-0ty2ddLnWo
55 12 Week / 1st Year Countersunk, counter bore and spot facing-tools and nomenclature. https://youtu.be/LbbujjO7FfQ
56 12 Week / 1st Year Cutting Speed, feed, depth of cut  https://youtu.be/NN3vOblJQQ8
57 12 Week / 1st Year Drilling time calculations. https://youtu.be/2HvWGvpxzk4
58 13_14 Week / 1st Year Interchangeability: Necessity in Engg, field ,Limit- types , terminology of limits https://youtu.be/VO-xekz8vps
59 13_14 Week / 1st Year fits-basic size, actual size, deviation, high and low limit, tolerance zone, allowances. https://youtu.be/VO-xekz8vps
60 13_14 Week / 1st Year Different standard systems of fits and limits https://youtu.be/5ZWHHHfgx20
61 15 Week / 1st Year Introduction to Shaper machine parts & constructional details, its function  https://youtu.be/8EmuFlW5t1Q
62 15 Week / 1st Year Quick return mechanism of shaper https://youtu.be/Y9uZuOdTfO8
63 15 Week / 1st Year Calculation of cutting Speed, feed & depth of cut. https://youtu.be/sBKe7cW6OHc
64 16_17 Week / 1st Year Grinding wheel: Abrasive, grade structures, bond, specification, https://youtu.be/Boq8jiiluvI
65 16_17 Week / 1st Year mounting and dressing. https://youtu.be/n7PHqtMOphw
66 16_17 Week / 1st Year Selection of grinding wheels. https://youtu.be/FYYq6jgxJl4
67 16_17 Week / 1st Year filler gauge https://youtu.be/LDt-79xyzfE
68 16_17 Week / 1st Year Radius/fillet gauge, https://youtu.be/sJZ4rtB4i4A
69 16_17 Week / 1st Year hole gauge, and their uses https://youtu.be/57NULa69oVI
70 18_19 Week / 1st Year Introduction to milling machine, parts & constructional details, https://youtu.be/qG2Qtdd9zt0
71 18_19 Week / 1st Year Different types of milling cutters https://youtu.be/S9tBsi8EmoY
72 18_19 Week / 1st Year Nomenclature of milling cutters. https://youtu.be/h0u3KkVBLg4
73 18_19 Week / 1st Year Milling cutter holding devices, work holding devices, https://youtu.be/0Kh3CQw8X7c
74 18_19 Week / 1st Year machine operations, Up milling and Down milling. https://youtu.be/WIAiYgLvsAU
75 18_19 Week / 1st Year Calculation of cutting speed, feed, machining time for milling machine. https://youtu.be/QK56soIAkYs
76 18_19 Week / 1st Year Indexing methods and its calculations. https://youtu.be/rY4iT0mC3so
77 20 Week / 1st Year Iron Carbon Equilibrium Diagram, Time-Temperature-Transformation https://youtu.be/-XbMcTlFph4
78 20 Week / 1st Year Annealing, Case Hardening, Tempering, Normalizing and Quenching https://youtu.be/TcrQ1__fYU0
79 21_22 Week / 1st Year Classification, construction, materials and functional detail of Chisels https://youtu.be/te2PzGGi_Kg
80 21_22 Week / 1st Year Classification, construction, materials and functional detail of hammer https://youtu.be/Vm63D-BH_Ng
81 21_22 Week / 1st Year Chipping technique. https://youtu.be/ED9HENE5ED0
82 21_22 Week / 1st Year hazards, risk and precautions https://youtu.be/YjjAGN62Z80
83 21_22 Week / 1st Year Scrapers: Introduction, Its types, material and use. https://youtu.be/WQH22QyQdtY
84 21_22 Week / 1st Year Types of bolts https://youtu.be/cmdHhR-Mwxw
85 21_22 Week / 1st Year Types of nuts https://youtu.be/Pg8sKImfoS8
86 21_22 Week / 1st Year locking devices for nut  https://youtu.be/9mRr8WJT1lQ
87 21_22 Week / 1st Year Wrench https://youtu.be/j0wj8hAMZMo
88 21_22 Week / 1st Year Spanner  https://youtu.be/rush4LLkVfE
89 21_22 Week / 1st Year Plier https://youtu.be/IvdFQiWfk88
90 21_22 Week / 1st Year Screw driver https://youtu.be/xmfmQFZ3W6Y
91 21_22 Week / 1st Year Washer https://youtu.be/PTteIn0vPag
92 21_22 Week / 1st Year Circlip https://youtu.be/VlmdSpce3OY
93 21_22 Week / 1st Year Split pin https://youtu.be/40TLwe8u_8U
94 21_22 Week / 1st Year Concept of torque & torque wrench. https://youtu.be/YQx0BG8G8yQ
95 21_22 Week / 1st Year Different types of rivets and their applications. https://youtu.be/mCQXyMiu82E
96 21_22 Week / 1st Year Fasteners & operating them by using proper hand tool https://youtu.be/H2kB9_Ss5BY
97 27_28 Week / 1st Year Surface finish - importance, symbol, measuring techniques. https://youtu.be/WHgC4NUT0i4
98 27_28 Week / 1st Year Lapping process https://youtu.be/GG0Qk7dpnqg
99 27_28 Week / 1st Year Honing process https://youtu.be/-fn89Osqq3A
100 27_28 Week / 1st Year Types of gauges https://youtu.be/4U_KI-oye14
101 29 Week / 1st Year Tolerances & interchangeability https://youtu.be/vC-ZB4UVZow
102 30 Week / 1st Year Fasteners: Introduction to fasteners, screw threads, related terminology https://youtu.be/H2kB9_Ss5BY
103 30 Week / 1st Year Keys- types & use, (parallel, sunk, tangential, gib head, woodruff, key ways) https://youtu.be/S8Qmy4fGnnE
104 30 Week / 1st Year Hazards, risk and precautions, while working. https://youtu.be/0kGHSt78K1w
105 30 Week / 1st Year preventive maintenance, predictive maintenance,breakdown maintenance https://youtu.be/2i8wf_T1CYU
106 30 Week / 1st Year Organization Structure for maintenance, advantage and disadvantage of TPM. https://youtu.be/bYdcJDzeWxM
107 31 Week / 1st Year Elements of mechanical power transmission, https://youtu.be/UichKjLmpo8
108 31 Week / 1st Year type of spindles and shafts https://youtu.be/z5_J28MWweg
109 31 Week / 1st Year Crank shaft https://youtu.be/qaOOHsCbGvI
110 31 Week / 1st Year Cam shaft https://youtu.be/yELZt-NVx_I
111 31 Week / 1st Year Belt drive, Chain drive and Rope drive https://youtu.be/BbS6OpaB6ls
112 31 Week / 1st Year Gear drive https://youtu.be/A2QB4OwFNww
113 31 Week / 1st Year Friction drive https://youtu.be/HkjnM-g-dQ0
114 32_33 Week / 1st Year Function of Clutches, its types https://youtu.be/HY_PjmHRxuE
115 32_33 Week / 1st Year Concept of coupling and its type https://youtu.be/FukaLPjOqwk
116 32_33 Week / 1st Year coupling https://youtu.be/1s_paUR6-eY
117 32_33 Week / 1st Year Fluid coupling, https://youtu.be/uyMfPg0vw18
118 32_33 Week / 1st Year Oldham-coupling https://youtu.be/T4SwucvG2As
119 32_33 Week / 1st Year Spider coupling https://youtu.be/2u8Fitlt4F4
120 32_33 Week / 1st Year Pin-bush coupling https://youtu.be/EvlK2sz1TYg
121 32_33 Week / 1st Year Brakes& Braking Mechanism: Types & Functions. Inspection of brakes for safe https://youtu.be/k5V4cSHkm0I
122 32_33 Week / 1st Year Belt types (Flat and V) and specifications. Pulleys used for belt drive. https://youtu.be/ZyzwIN103hI
123 32_33 Week / 1st Year Slip of belt https://youtu.be/EDsLDmxKiLI
124 32_33 Week / 1st Year Creep of belt https://youtu.be/HFw8JIQ844Q
125 32_33 Week / 1st Year Types of chains https://youtu.be/QEe_eNBgc1E
126 32_33 Week / 1st Year Maintenance of chain drive. https://youtu.be/VrdtuWkIJys
127  34_35 Week / 1st Year  function of bearing, its types - Solid Bush, Split Bush, Collar, Pivot  https://youtu.be/cuNjoaAhoW8
128  34_35 Week / 1st Year Mounting of bearings https://youtu.be/9AXDj3q6jgo
129  34_35 Week / 1st Year Type of Roller bearings https://youtu.be/59xurJFepow
130  34_35 Week / 1st Year Methods of Mounting and dismounting of roller contact  https://youtu.be/9AXDj3q6jgo
131  34_35 Week / 1st Year angular contact ball bearing.  https://youtu.be/drm3oSY-Piw
132  34_35 Week / 1st Year Mounting-dismounting and adjustment of Taper bore bearings https://youtu.be/TeXRgynBb-k
133  34_35 Week / 1st Year Ball bearing https://youtu.be/sON3q-UO2uU
134  34_35 Week / 1st Year Roller bearing https://youtu.be/VCJeuOpNmRg
135  34_35 Week / 1st Year Basics of bearning https://youtu.be/-zpzsdQMrt0
136  34_35 Week / 1st Year Rigging Knowledge of different tools & tackles used in rigging. https://youtu.be/nLBr6nrxx5k
137  34_35 Week / 1st Year capacity of wire rope https://youtu.be/Kb9dsN3rdh0
138  34_35 Week / 1st Year Construction and capacity of belts https://youtu.be/fgU3Ydrv398
139  34_35 Week / 1st Year Application of knots and hitches. https://youtu.be/fFTN4ZXNvak
140 36 Week / 1st Year Type, description and function of gears https://youtu.be/jTfUFQ-sbas
141 36 Week / 1st Year Gear Terminology. Gear train- simple, compound, reverted and epicyclic. https://youtu.be/JwCRMKR5O5c
142 37 Week / 1st Year sliding mesh gear box https://youtu.be/2UIYY8oygAs
143 37 Week / 1st Year constant mesh gear box https://youtu.be/W1vOzcBbgfg
144 37 Week / 1st Year Sychromesh gear box https://youtu.be/u6Ba9i1V97U
145 37 Week / 1st Year Checking of backlash and root clearances with Feeler Gauge, Dial Test Indicator https://youtu.be/r0NsMzdFcZg
146 37 Week / 1st Year Impression testing of gear mesh with Prussian blue. https://youtu.be/MK76pC6U1XA
147 37 Week / 1st Year Risk and precautions https://youtu.be/LIzcg74n2ew
148 38_39 Week / 1st Year Lubrication and its importance, lubricating systems Concept of lubrication https://youtu.be/H_OKi6FI-OE
149 38_39 Week / 1st Year Types and properties of Oil and Grease. https://youtu.be/tguvqS-LXZ4
150 38_39 Week / 1st Year Methods of oil lubrication- Once through and centralized lubrication system. https://youtu.be/YeKyTadGAYU
151 38_39 Week / 1st Year splash lubrication system https://youtu.be/rjIwYoZ3awQ
152 38_39 Week / 1st Year Methods of grease lubrication system- grease guns, centralized lubrication https://youtu.be/8THwXEXApkE
153 38_39 Week / 1st Year centralized lubrication system https://youtu.be/ylt3PYJAyVw
154 38_39 Week / 1st Year Pressure switch, temperature gauge https://youtu.be/puNKAW5Nurc
155 38_39 Week / 1st Year Lubrication fittings. Storage and handling https://youtu.be/zM0GRYn69Ug
156 38_39 Week / 1st Year Contamination control https://youtu.be/_drr2q_s280
157 38_39 Week / 1st Year Leakage prevention- Shaft seals, sealing devices and “O” rings. https://youtu.be/-WO5W24dw7o
158 40 Week / 1st Year Cutting Fluids and Coolants.  https://youtu.be/7wH_0WR9tfw
159 40 Week / 1st Year Essential parts of a basic coolant system used in the cutting of metals. https://youtu.be/mj18OBwtlt0
160 40 Week / 1st Year Various types of coolants, its properties and uses https://youtu.be/a1QFqt_7PIg
161 40 Week / 1st Year Effect of cutting fluids in metal cutting https://youtu.be/YHnXTAgHwLY
162 40 Week / 1st Year Difference between coolant and lubricants. https://youtu.be/7wH_0WR9tfw
163 41 Week / 1st Year Machine Foundation Purpose & methods employed for installation https://youtu.be/azREI3iKfZ0
164 41 Week / 1st Year Different types of foundations –structural, reinforced, wooden, isolated  https://youtu.be/6slOoKsgUi0
165 42 Week / 1st Year Foundation bolt: types (rag, Lewis cotter bolt) https://youtu.be/MVq3oFl1jDE
166 42 Week / 1st Year Use of plumb bob https://youtu.be/diuD8TrUwQk
167 42 Week / 1st Year pulley block https://youtu.be/xegVXi7pWOA
168 42 Week / 1st Year Spirit level https://youtu.be/k7pduNjKG3I
169 42 Week / 1st Year use of crowbar tool https://youtu.be/iCXkpNDtCXQ
170 42 Week / 1st Year The use of lifting appliances, extractor presses and their use. https://youtu.be/SmYpWcuYX1w
171 42 Week / 1st Year The slings and handling of heavy machinery, https://youtu.be/lZLTZ25pNxs
172 43_44_45 Week / 1st Year Autonomous maintenance https://youtu.be/Vcl1aQFjSZ8
173 43_44_45 Week / 1st Year Total productive maintenance https://youtu.be/pCjKmSppQfM
174 43_44_45 Week / 1st Year Routine maintenance https://youtu.be/GZyt1NSDe6g
175 43_44_45 Week / 1st Year Maintenance schedule https://youtu.be/TcCE9pBxe5Q
176 43_44_45 Week / 1st Year Geometrical tests and inspection method with instruments. https://youtu.be/FlJjWbU0NUI
177 43_44_45 Week / 1st Year Preventive maintenance-objective and function of Preventive maintenance https://youtu.be/RSsTiqJJZjs
178 43_44_45 Week / 1st Year Hazardous waste management. https://youtu.be/5sjA5rXgjGA
179 43_44_45 Week / 1st Year Study of basic Electricals- Voltage –Current etc. https://youtu.be/-BSQajenJbc
180 43_44_45 Week / 1st Year Working Of Solenoids https://youtu.be/tufxSAWTKTE
181 43_44_45 Week / 1st Year Inductors, Motors https://youtu.be/NgwXkUt3XxQ
182 43_44_45 Week / 1st Year Generator Based On Electromagnetic Induction Principle. https://youtu.be/FpzlZq_wDL4
183 46_47 Week / 1st Year Safely precautions to be observed while working on a lathe, https://youtu.be/PFJ0ZBSyIm0
184 46_47 Week / 1st Year Lathe specifications, and constructional features. Lathe main parts descriptions https://youtu.be/p_LgK0Ffg20
185 46_47 Week / 1st Year Feeding and thread cutting mechanisms. https://youtu.be/p2-uPc8Ojrc
186 46_47 Week / 1st Year Holding of job between centers https://youtu.be/_bThE9M35Io
187 46_47 Week / 1st Year works with catch plate, dog https://youtu.be/my9ixtJogCg
188 46_47 Week / 1st Year Simple description of a facing and roughing tool and their applications. https://youtu.be/SvlZHHDXCZs