PART FOUR – TIMBER CONVERSION

 

4A HEWING

 

DESCRIPTION 1

 

Identify and demonstrate techniques for hewing logs and timbers. 2

Demonstrate the safe care and use of tools for hewing logs and timbers. 3

Identify hazards associated with hewing logs and timbers. 4

Identify and describe appropriate PPE for hewing logs and timbers. 5

 

LEARNING TASKS 6		CONTENT 7
1.      Hewing safety 8		•         Identify Hazards 9 •         PPE 10 •         Tool Guards & Sheaths 11 •         Good Practice 12
2.      Demonstrate the safe care and use of tools for hewing  13		•         Broad Axes & Side Axes 14 •         Adzes 15 •         Misc Tools (Log Dogs, etc) 16
3.      Hewing techniques 17		•         Historic Examples 18 •         Regional Types  19 •         Lining Logs 20 •         Joggling  21 •         Hewing with Axes 22 •         Dressing with Adzes 23

 

 

GOALS FOR SUCCESSFUL COMPLETION

 

Theory: 24

 

i)                    Given drawings/photographs of 10 historic tools used for timber conversion, learners will identify the correct names of the tools and their uses for timber conversion, within10 minutes and score a minimum of 70%, or 7 correct answers. 25

 

ii)                   Given a multiple choice test of 20 recall/recognition type questions about the safe care, maintenance, storage and sharpening of hewing (omitted words) tools, the learner will answer all questions within 20 minutes and score a minimum of 70%, or 14 correct answers. 26

 

Practical: 27

 

iii)                 Given the following tools: 28

·        Carpenter’s Pencil 29

·        Tape Measure 30

·        2 Framing Squares 31

·        Chalk Line / Ink Line 32

·        2 ft Spirit Level  33

·        2 Log Dogs 34

·        Plumb Bob 35

·        Felling Axe  36

·        Broad Axe or Side Axe (with Sharpening Tools) 37

·        2 HD Saw Horses 38

·        2 Peaveys 39

·        PPE 40

Learners will perform a visual inspection of the tools and correctly determine if they are fit for use (safe, sharp and appropriate to task, etc). Learners will ‘line’ a log (min 6ft by 12” diameter), and mark the log butt with plumb and level markings. Learners will then demonstrate one safe and correct method for hewing a square timber to within 1” tolerance of wind and 3/4” tolerance of straightness. 41

 

 

iv)                 Given the following tools: 42

·        Carpenter’s Pencil 43

·        Tape Measure 44

·        2 Framing Squares 45

·        Chalk Line / Ink Line 46

·        2 Log Dogs  47

·        Adze (with Sharpening Tools) 48

·        2 HD Saw Horses 49

·        2 Peaveys 50

·        PPE 51

Learners will perform a visual inspection of the tools and correctly determine if they are fit for use (safe, sharp and appropriate to task, etc). Learners will then demonstrate one safe and correct method of surfacing/dressing timbers to within 1/2” tolerance of wind and 1/4” tolerance of flat. 52

 

 

PART FOUR – TIMBER CONVERSION

 

4B MILLING PROCEDURES

 

DESCRIPTION 53

 

Identify and describe timber milling equipment. 54

Identify and describe timber  milling procedures. 55

Identify and describe special considerations for the milling of salvaged timber. 56

Demonstrate milling with portable sawmill. 57

 

LEARNING TASKS 58		CONTENT 59
1.      Identify and describe timber milling equipment 60		•         Commercial Band Mills 61 •         Commercial Circular Mills & Head Rigs 62 •         Portable Band Mills 63 •         Chainsaw Mills 64
2.      Identify and describe timber milling procedures 65		•         Log Sorting, Selection & Bucking 66 •         Types of Cut 67 •         Rolling & Handling 68 •         Stacking, Stickering  & Storage 69 •         Waste Management 70
3.      Identify and describe special considerations for milling salvaged timber 71		•         Salvage Sources & Techniques 72 •         Metal Detection / Scanning 73 •         Removing Imbedded Objects 74
4.      Demonstrate milling with portable sawmill 75		•         Identify Hazards 76 •         Safety Precautions 77 •         Inspection & Maintenance 78 •         PPE 79 •         ‘Backing-out’ the Blade 80 •         Wedging a Blade Kerf 81 •         Set-up, Start-up & Shut-down Procedures 82 •         Emergency Shut-down Procedure 83 •         Establishing the ‘Plane of Cut’ 84 •         Rolling, Dogging & Levelling Logs 85 •         Blade Selection & Care 86 •         Safe & Effective Material Handling 87 •         Minimising Waste & waste Handling 88 •         Maximizing Lumber Production & Grade 89

 

GOALS FOR SUCCESSFUL COMPLETION

 

Theory: 90

 

i)                    Given a multiple choice test of 40 recall/recognition type questions about milling procedures, the learner will answer all questions within 30 minutes and score a minimum of 70% or 28 correct answers without reference materials.  91

 

Practical: 92

 

ii)                   Given the following tools: 93

·        Carpenter’s Pencil 94

·        Tape Measure 95

·        String Line 96

·        2 ft Spirit Level  97

·        Portable Saw Mill such as a ‘Woodmizer’ Horizontal Bandsaw (Accompanied by an Experienced Operator / Owner) 98

·        Appropriate Maintenance Tools & Consumables 99

·        Operator’s Manual for Mill 100

·        PPE 101

Learners will perform a visual inspection of the mill and correctly determine if it is fit for use (safe, sharp and appropriate to task, etc). Learner will check mill for wind and level, and make any necessary corrections as appropriate. Under the direct supervision of an Experienced Operator, learners will mill a log into a 4-sided timber to a specified tolerance. Learners will demonstrate their understanding of tension / reaction wood, by explaining their strategy for milling; this to achieve minimise waste, optimal timber sizes and grades, and maximum tally. Learners will also remove, replace, ‘fold’ / ‘unfold’ (for storage) and correctly tension blades.  102

 

PART FOUR – TIMBER CONVERSION

 

4C HAND SAW CONVERSION

 

DESCRIPTION 103

 

Identify and demonstrate traditional techniques for sawing logs and timbers. 104

Demonstrate the safe care and use of tools for sawing logs and timbers. 105

Identify hazards associated with sawing logs and timbers. 106

Identify and describe appropriate PPE for sawing logs and timbers. 107

 

LEARNING TASKS 108		CONTENT 109
1.      Sawing safety 110		•         Identify Hazards 111 •         PPE 112 •         Tool Guards & Sheaths 113 •         Good Practice 114
2.      Demonstrate the safe care and use of traditional tools for sawing  115		•         Pit Saws & Frame Saws 116 •         Misc Tools (Log Dogs, Saw Oil, etc) 117
3.      Sawing techniques 118		•         Historic Examples 119 •         Pit Sawing, Sea-sawing & Swing-sawing 120 •         Traditional Cross-cut Saws 121

 

 

GOALS FOR SUCCESSFUL COMPLETION

 

Theory: 122

 

iii)                 Given drawings/photographs of 10 historic tools used for timber conversion, learners will identify the correct names of the tools and their uses for timber conversion, within 10 minutes and score a minimum of 70%, or 7 correct answers. 123

 

iv)                 Given a multiple choice test of 20 recall/recognition type questions about the safe care, maintenance, storage and sharpening of sawing tools, the learner will answer all questions within 20 minutes and score a minimum of 70%, or 14 correct answers. 124

 

Practical: 125

 

v)                  Given the following tools: 126

·        Carpenter’s Pencil 127

·        Tape Measure 128

·        Chalk Line / Ink Line 129

·        2 ft Spirit Level  130

·        2 Log Dogs 131

·        Plumb Bob 132

·        Saw Pit / Saw Frame  133

·        Saw Oil & Brush 134

·        2 Peaveys 135

·        6 Small Wooden Wedges 136

·        PPE 137

Learners will perform a visual inspection of the tools and correctly determine if they are fit for use (safe, sharp and appropriate to task, etc). Learners will ‘line’ a log (min 6ft by 12” diameter), and make a plumb mark on the log butt. Learners will then rip a minimum of 1 slab and 1 live-edge plank to within 1/2” tolerance overall. Learners will demonstrate their understanding of tension / reaction wood by describing their strategy for milling; this to achieve minimum waste and maximum tally.  138